Lenora  Hauck

Lenora Hauck

1598883420

Data Visualizations using Python and Seaborn

Data Visualization

Data visualization refers to the process of representation of data in various visual formats like a graph, chart, etc. It is important because it allows trends and hidden patterns to be more easily seen, which is also easier for the human brain to understand.

Python provides various libraries for data visualization libraries such as matplotlib, seaborn, plotly, bokeh, etc. In this article, we learn about data visualization by using seaborn.

Seaborn

Seaborn is a Python data visualization library built on top of the matplotlib library. It provides a high-level interface for drawing attractive and informative statistical graphics. The best thing about seaborn is we get a lot of statistical tools that help us understand more about the data.

First, we need to divide our dataset in between independent variables and dependent variables. To find the relation or pattern between any two variables. Seaborn comes with many different types of plot. Now we will discuss different types of plot provided by seaborn.

Data Visualizations using Python and Seaborn

Technology August 6, 2020

Data Visualizations using Python and Seaborn

Data Visualization

Data visualization refers to the process of representation of data in various visual formats like a graph, chart, etc. It is important because it allows trends and hidden patterns to be more easily seen, which is also easier for the human brain to understand.

Python provides various libraries for data visualization libraries such as matplotlib, seaborn, plotly, bokeh, etc. In this article, we learn about data visualization by using seaborn.

Seaborn

Seaborn is a Python data visualization library built on top of the matplotlib library. It provides a high-level interface for drawing attractive and informative statistical graphics. The best thing about seaborn is we get a lot of statistical tools that help us understand more about the data.

First, we need to divide our dataset in between independent variables and dependent variables. To find the relation or pattern between any two variables. Seaborn comes with many different types of plot. Now we will discuss different types of plot provided by seaborn.

Installing Seaborn

The seaborn has few requirements which you need to have

1. NumPy

2. pandas

3. matplotlib

4 SciPy

To install seaborn you should have all the above-mentioned libraries installed in your system .Once you install the required libraries, we are ready to install seaborn. To install seaborn, you can use

pip install seaborn

After we install seaborn, we are all set to explore seaborn.

To begin with seaborn libraries we need to import it as

import seaborn as sns

After importing we will be using built-in function load_dataset() which is used to load the dataset which is present inside the seaborn libraries.

In this article, we will be using the ‘tips’ dataset. This is a dataset from a restaurant where many come to eat food and after eating based on a total bill they hate paid some tips. For these, we have features like total_bill, tip, sex, smoker, day, time, size you can load the dataset by using

#technology #data visualizations #python #seaborn

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Data Visualizations using Python and Seaborn
Chloe  Butler

Chloe Butler

1667425440

Pdf2gerb: Perl Script Converts PDF Files to Gerber format

pdf2gerb

Perl script converts PDF files to Gerber format

Pdf2Gerb generates Gerber 274X photoplotting and Excellon drill files from PDFs of a PCB. Up to three PDFs are used: the top copper layer, the bottom copper layer (for 2-sided PCBs), and an optional silk screen layer. The PDFs can be created directly from any PDF drawing software, or a PDF print driver can be used to capture the Print output if the drawing software does not directly support output to PDF.

The general workflow is as follows:

  1. Design the PCB using your favorite CAD or drawing software.
  2. Print the top and bottom copper and top silk screen layers to a PDF file.
  3. Run Pdf2Gerb on the PDFs to create Gerber and Excellon files.
  4. Use a Gerber viewer to double-check the output against the original PCB design.
  5. Make adjustments as needed.
  6. Submit the files to a PCB manufacturer.

Please note that Pdf2Gerb does NOT perform DRC (Design Rule Checks), as these will vary according to individual PCB manufacturer conventions and capabilities. Also note that Pdf2Gerb is not perfect, so the output files must always be checked before submitting them. As of version 1.6, Pdf2Gerb supports most PCB elements, such as round and square pads, round holes, traces, SMD pads, ground planes, no-fill areas, and panelization. However, because it interprets the graphical output of a Print function, there are limitations in what it can recognize (or there may be bugs).

See docs/Pdf2Gerb.pdf for install/setup, config, usage, and other info.


pdf2gerb_cfg.pm

#Pdf2Gerb config settings:
#Put this file in same folder/directory as pdf2gerb.pl itself (global settings),
#or copy to another folder/directory with PDFs if you want PCB-specific settings.
#There is only one user of this file, so we don't need a custom package or namespace.
#NOTE: all constants defined in here will be added to main namespace.
#package pdf2gerb_cfg;

use strict; #trap undef vars (easier debug)
use warnings; #other useful info (easier debug)


##############################################################################################
#configurable settings:
#change values here instead of in main pfg2gerb.pl file

use constant WANT_COLORS => ($^O !~ m/Win/); #ANSI colors no worky on Windows? this must be set < first DebugPrint() call

#just a little warning; set realistic expectations:
#DebugPrint("${\(CYAN)}Pdf2Gerb.pl ${\(VERSION)}, $^O O/S\n${\(YELLOW)}${\(BOLD)}${\(ITALIC)}This is EXPERIMENTAL software.  \nGerber files MAY CONTAIN ERRORS.  Please CHECK them before fabrication!${\(RESET)}", 0); #if WANT_DEBUG

use constant METRIC => FALSE; #set to TRUE for metric units (only affect final numbers in output files, not internal arithmetic)
use constant APERTURE_LIMIT => 0; #34; #max #apertures to use; generate warnings if too many apertures are used (0 to not check)
use constant DRILL_FMT => '2.4'; #'2.3'; #'2.4' is the default for PCB fab; change to '2.3' for CNC

use constant WANT_DEBUG => 0; #10; #level of debug wanted; higher == more, lower == less, 0 == none
use constant GERBER_DEBUG => 0; #level of debug to include in Gerber file; DON'T USE FOR FABRICATION
use constant WANT_STREAMS => FALSE; #TRUE; #save decompressed streams to files (for debug)
use constant WANT_ALLINPUT => FALSE; #TRUE; #save entire input stream (for debug ONLY)

#DebugPrint(sprintf("${\(CYAN)}DEBUG: stdout %d, gerber %d, want streams? %d, all input? %d, O/S: $^O, Perl: $]${\(RESET)}\n", WANT_DEBUG, GERBER_DEBUG, WANT_STREAMS, WANT_ALLINPUT), 1);
#DebugPrint(sprintf("max int = %d, min int = %d\n", MAXINT, MININT), 1); 

#define standard trace and pad sizes to reduce scaling or PDF rendering errors:
#This avoids weird aperture settings and replaces them with more standardized values.
#(I'm not sure how photoplotters handle strange sizes).
#Fewer choices here gives more accurate mapping in the final Gerber files.
#units are in inches
use constant TOOL_SIZES => #add more as desired
(
#round or square pads (> 0) and drills (< 0):
    .010, -.001,  #tiny pads for SMD; dummy drill size (too small for practical use, but needed so StandardTool will use this entry)
    .031, -.014,  #used for vias
    .041, -.020,  #smallest non-filled plated hole
    .051, -.025,
    .056, -.029,  #useful for IC pins
    .070, -.033,
    .075, -.040,  #heavier leads
#    .090, -.043,  #NOTE: 600 dpi is not high enough resolution to reliably distinguish between .043" and .046", so choose 1 of the 2 here
    .100, -.046,
    .115, -.052,
    .130, -.061,
    .140, -.067,
    .150, -.079,
    .175, -.088,
    .190, -.093,
    .200, -.100,
    .220, -.110,
    .160, -.125,  #useful for mounting holes
#some additional pad sizes without holes (repeat a previous hole size if you just want the pad size):
    .090, -.040,  #want a .090 pad option, but use dummy hole size
    .065, -.040, #.065 x .065 rect pad
    .035, -.040, #.035 x .065 rect pad
#traces:
    .001,  #too thin for real traces; use only for board outlines
    .006,  #minimum real trace width; mainly used for text
    .008,  #mainly used for mid-sized text, not traces
    .010,  #minimum recommended trace width for low-current signals
    .012,
    .015,  #moderate low-voltage current
    .020,  #heavier trace for power, ground (even if a lighter one is adequate)
    .025,
    .030,  #heavy-current traces; be careful with these ones!
    .040,
    .050,
    .060,
    .080,
    .100,
    .120,
);
#Areas larger than the values below will be filled with parallel lines:
#This cuts down on the number of aperture sizes used.
#Set to 0 to always use an aperture or drill, regardless of size.
use constant { MAX_APERTURE => max((TOOL_SIZES)) + .004, MAX_DRILL => -min((TOOL_SIZES)) + .004 }; #max aperture and drill sizes (plus a little tolerance)
#DebugPrint(sprintf("using %d standard tool sizes: %s, max aper %.3f, max drill %.3f\n", scalar((TOOL_SIZES)), join(", ", (TOOL_SIZES)), MAX_APERTURE, MAX_DRILL), 1);

#NOTE: Compare the PDF to the original CAD file to check the accuracy of the PDF rendering and parsing!
#for example, the CAD software I used generated the following circles for holes:
#CAD hole size:   parsed PDF diameter:      error:
#  .014                .016                +.002
#  .020                .02267              +.00267
#  .025                .026                +.001
#  .029                .03167              +.00267
#  .033                .036                +.003
#  .040                .04267              +.00267
#This was usually ~ .002" - .003" too big compared to the hole as displayed in the CAD software.
#To compensate for PDF rendering errors (either during CAD Print function or PDF parsing logic), adjust the values below as needed.
#units are pixels; for example, a value of 2.4 at 600 dpi = .0004 inch, 2 at 600 dpi = .0033"
use constant
{
    HOLE_ADJUST => -0.004 * 600, #-2.6, #holes seemed to be slightly oversized (by .002" - .004"), so shrink them a little
    RNDPAD_ADJUST => -0.003 * 600, #-2, #-2.4, #round pads seemed to be slightly oversized, so shrink them a little
    SQRPAD_ADJUST => +0.001 * 600, #+.5, #square pads are sometimes too small by .00067, so bump them up a little
    RECTPAD_ADJUST => 0, #(pixels) rectangular pads seem to be okay? (not tested much)
    TRACE_ADJUST => 0, #(pixels) traces seemed to be okay?
    REDUCE_TOLERANCE => .001, #(inches) allow this much variation when reducing circles and rects
};

#Also, my CAD's Print function or the PDF print driver I used was a little off for circles, so define some additional adjustment values here:
#Values are added to X/Y coordinates; units are pixels; for example, a value of 1 at 600 dpi would be ~= .002 inch
use constant
{
    CIRCLE_ADJUST_MINX => 0,
    CIRCLE_ADJUST_MINY => -0.001 * 600, #-1, #circles were a little too high, so nudge them a little lower
    CIRCLE_ADJUST_MAXX => +0.001 * 600, #+1, #circles were a little too far to the left, so nudge them a little to the right
    CIRCLE_ADJUST_MAXY => 0,
    SUBST_CIRCLE_CLIPRECT => FALSE, #generate circle and substitute for clip rects (to compensate for the way some CAD software draws circles)
    WANT_CLIPRECT => TRUE, #FALSE, #AI doesn't need clip rect at all? should be on normally?
    RECT_COMPLETION => FALSE, #TRUE, #fill in 4th side of rect when 3 sides found
};

#allow .012 clearance around pads for solder mask:
#This value effectively adjusts pad sizes in the TOOL_SIZES list above (only for solder mask layers).
use constant SOLDER_MARGIN => +.012; #units are inches

#line join/cap styles:
use constant
{
    CAP_NONE => 0, #butt (none); line is exact length
    CAP_ROUND => 1, #round cap/join; line overhangs by a semi-circle at either end
    CAP_SQUARE => 2, #square cap/join; line overhangs by a half square on either end
    CAP_OVERRIDE => FALSE, #cap style overrides drawing logic
};
    
#number of elements in each shape type:
use constant
{
    RECT_SHAPELEN => 6, #x0, y0, x1, y1, count, "rect" (start, end corners)
    LINE_SHAPELEN => 6, #x0, y0, x1, y1, count, "line" (line seg)
    CURVE_SHAPELEN => 10, #xstart, ystart, x0, y0, x1, y1, xend, yend, count, "curve" (bezier 2 points)
    CIRCLE_SHAPELEN => 5, #x, y, 5, count, "circle" (center + radius)
};
#const my %SHAPELEN =
#Readonly my %SHAPELEN =>
our %SHAPELEN =
(
    rect => RECT_SHAPELEN,
    line => LINE_SHAPELEN,
    curve => CURVE_SHAPELEN,
    circle => CIRCLE_SHAPELEN,
);

#panelization:
#This will repeat the entire body the number of times indicated along the X or Y axes (files grow accordingly).
#Display elements that overhang PCB boundary can be squashed or left as-is (typically text or other silk screen markings).
#Set "overhangs" TRUE to allow overhangs, FALSE to truncate them.
#xpad and ypad allow margins to be added around outer edge of panelized PCB.
use constant PANELIZE => {'x' => 1, 'y' => 1, 'xpad' => 0, 'ypad' => 0, 'overhangs' => TRUE}; #number of times to repeat in X and Y directions

# Set this to 1 if you need TurboCAD support.
#$turboCAD = FALSE; #is this still needed as an option?

#CIRCAD pad generation uses an appropriate aperture, then moves it (stroke) "a little" - we use this to find pads and distinguish them from PCB holes. 
use constant PAD_STROKE => 0.3; #0.0005 * 600; #units are pixels
#convert very short traces to pads or holes:
use constant TRACE_MINLEN => .001; #units are inches
#use constant ALWAYS_XY => TRUE; #FALSE; #force XY even if X or Y doesn't change; NOTE: needs to be TRUE for all pads to show in FlatCAM and ViewPlot
use constant REMOVE_POLARITY => FALSE; #TRUE; #set to remove subtractive (negative) polarity; NOTE: must be FALSE for ground planes

#PDF uses "points", each point = 1/72 inch
#combined with a PDF scale factor of .12, this gives 600 dpi resolution (1/72 * .12 = 600 dpi)
use constant INCHES_PER_POINT => 1/72; #0.0138888889; #multiply point-size by this to get inches

# The precision used when computing a bezier curve. Higher numbers are more precise but slower (and generate larger files).
#$bezierPrecision = 100;
use constant BEZIER_PRECISION => 36; #100; #use const; reduced for faster rendering (mainly used for silk screen and thermal pads)

# Ground planes and silk screen or larger copper rectangles or circles are filled line-by-line using this resolution.
use constant FILL_WIDTH => .01; #fill at most 0.01 inch at a time

# The max number of characters to read into memory
use constant MAX_BYTES => 10 * M; #bumped up to 10 MB, use const

use constant DUP_DRILL1 => TRUE; #FALSE; #kludge: ViewPlot doesn't load drill files that are too small so duplicate first tool

my $runtime = time(); #Time::HiRes::gettimeofday(); #measure my execution time

print STDERR "Loaded config settings from '${\(__FILE__)}'.\n";
1; #last value must be truthful to indicate successful load


#############################################################################################
#junk/experiment:

#use Package::Constants;
#use Exporter qw(import); #https://perldoc.perl.org/Exporter.html

#my $caller = "pdf2gerb::";

#sub cfg
#{
#    my $proto = shift;
#    my $class = ref($proto) || $proto;
#    my $settings =
#    {
#        $WANT_DEBUG => 990, #10; #level of debug wanted; higher == more, lower == less, 0 == none
#    };
#    bless($settings, $class);
#    return $settings;
#}

#use constant HELLO => "hi there2"; #"main::HELLO" => "hi there";
#use constant GOODBYE => 14; #"main::GOODBYE" => 12;

#print STDERR "read cfg file\n";

#our @EXPORT_OK = Package::Constants->list(__PACKAGE__); #https://www.perlmonks.org/?node_id=1072691; NOTE: "_OK" skips short/common names

#print STDERR scalar(@EXPORT_OK) . " consts exported:\n";
#foreach(@EXPORT_OK) { print STDERR "$_\n"; }
#my $val = main::thing("xyz");
#print STDERR "caller gave me $val\n";
#foreach my $arg (@ARGV) { print STDERR "arg $arg\n"; }

Download Details:

Author: swannman
Source Code: https://github.com/swannman/pdf2gerb

License: GPL-3.0 license

#perl 

Create Pagination Using jQuery

In this article, we will see how to create pagination using jquery. We will create jquery pagination using multiple ways. You can create pagination using different ways like creating pagination using simple HTML, you can create pagination in laravel using paginate() method. Also, create pagination laravel livewire, pagination using bootstrap.

We will create simple jquery pagination. Also, create pagination using jquery without a plugin and create jquery pagination with next and previous buttons

So, let's see dynamic pagination in jquery and bootstrap pagination in jquery

Example:

In this example, we will create pagination using jquery without using a plugin. Also, you can customize the pagination.

<!DOCTYPE html>
<html lang="en">
    <head>
        <title>How To Create Pagination Using jQuery - Websolutionstuff</title>
        <style>
            .current {
            color: green;
            }

            #pagin li {
            display: inline-block;
            font-weight: 500;
            }

            .prev {
            cursor: pointer;
            }

            .next {
            cursor: pointer;
            }

            .last {
            cursor:pointer;
            margin-left:10px;
            }

            .first {
            cursor:pointer;
            margin-right:10px;
            }

            .line-content, #pagin, h3 {
            text-align:center;
            }

            .line-content {
            margin-top:20px;
            }

            #pagin {
            margin-top:10px;
            padding-left:0;
            }

            h3 {
            margin:50px 0;  
            }
        </style>
    </head>
    <body>
        <h3>How To Create Pagination Using jQuery - Websolutionstuff</h3>
        <div class="line-content">This is Page 1 content example with next and prev.</div>
        <div class="line-content">This is Page 2 content example with next and prev.</div>
        <div class="line-content">This is Page 3 content example with next and prev.</div>
        <div class="line-content">This is Page 4 content example with next and prev.</div>
        <div class="line-content">This is Page 5 content example with next and prev.</div>
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        <div class="line-content">This is Page 7 content example with next and prev.</div>
        <div class="line-content">This is Page 8 content example with next and prev.</div>
        <div class="line-content">This is Page 9 content example with next and prev.</div>
        <div class="line-content">This is Page 10 content example with next and prev.</div>
        <div class="line-content">This is Page 11 content example with next and prev.</div>
        <div class="line-content">This is Page 12 content example with next and prev.</div>
        <div class="line-content">This is Page 13 content example with next and prev.</div>
        <div class="line-content">This is Page 14 content example with next and prev.</div>
        <div class="line-content">This is Page 15 content example with next and prev.</div>
        <div class="line-content">This is Page 16 content example with next and prev.</div>
        <div class="line-content">This is Page 17 content example with next and prev.</div>
        <div class="line-content">This is Page 18 content example with next and prev.</div>
        <div class="line-content">This is Page 19 content example with next and prev.</div>
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        <div class="line-content">This is Page 29 content example with next and prev.</div>
        <div class="line-content">This is Page 30 content example with next and prev.</div>
        <div class="line-content">This is Page 31 content example with next and prev.</div>
        <div class="line-content">This is Page 32 content example with next and prev.</div>
        <div class="line-content">This is Page 33 content example with next and prev.</div>
        <div class="line-content">This is Page 34 content example with next and prev.</div>
        <div class="line-content">This is Page 35 content example with next and prev.</div>
        <div class="line-content">This is Page 36 content example with next and prev.</div>
        <div class="line-content">This is Page 37 content example with next and prev.</div>
        <div class="line-content">This is Page 38 content example with next and prev.</div>
        <div class="line-content">This is Page 39 content example with next and prev.</div>
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        <div class="line-content">This is Page 45 content example with next and prev.</div>
        <ul id="pagin"></ul>
    </body>
</html>
<script src="https://code.jquery.com/jquery-3.6.1.min.js" integrity="sha256-o88AwQnZB+VDvE9tvIXrMQaPlFFSUTR+nldQm1LuPXQ=" crossorigin="anonymous"></script>
<script>

pageSize = 5;
incremSlide = 5;
startPage = 0;
numberPage = 0;

var pageCount =  $(".line-content").length / pageSize;
var totalSlidepPage = Math.floor(pageCount / incremSlide);
    
for(var i = 0 ; i<pageCount;i++){
    $("#pagin").append('<li><a href="#">'+(i+1)+'</a></li> ');
    if(i>pageSize){
       $("#pagin li").eq(i).hide();
    }
}

var prev = $("<li/>").addClass("prev").html("Prev").click(function(){
    startPage-=5;
    incremSlide-=5;
    numberPage--;
    slide();
});

prev.hide();

var next = $("<li/>").addClass("next").html("Next").click(function(){
    startPage+=5;
    incremSlide+=5;
    numberPage++;
    slide();
});

$("#pagin").prepend(prev).append(next);

$("#pagin li").first().find("a").addClass("current");

slide = function(sens){
    $("#pagin li").hide();
   
    for(t=startPage;t<incremSlide;t++){
        $("#pagin li").eq(t+1).show();
    }
    if(startPage == 0){
        next.show();
        prev.hide();
    }else if(numberPage == totalSlidepPage ){
        next.hide();
        prev.show();
    }else{
        next.show();
        prev.show();
    }    
}

showPage = function(page) {
    $(".line-content").hide();
    $(".line-content").each(function(n) {
        if (n >= pageSize * (page - 1) && n < pageSize * page){
            $(this).show();
        }
    });        
}
    
showPage(1);
$("#pagin li a").eq(0).addClass("current");

$("#pagin li a").click(function() {
    $("#pagin li a").removeClass("current");
    $(this).addClass("current");
    showPage(parseInt($(this).text()));
});
</script>

Output:

how_to_create_pagination_using_jquery_output

Example:

In this example, we will create bootstrap pagination with help of jquery.

<!DOCTYPE html>
<html lang="en">
    <head>
        <title>How To Create Bootstrap Pagination Using jQuery - Websolutionstuff</title>
        <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
        <style>
            #data tr {
                display: none;
            }

            .page {
                margin: 30px;
            }

            table, th, td {
                border: 1px solid black;
            }

            #data {
                font-family: Arial, Helvetica, sans-serif;
                border-collapse: collapse;
                width: 100%;
            }

            #data td, #data th {
                border: 1px solid #ddd;
                padding: 8px;
            }

            #data tr:nth-child(even) {
                background-color: #f2f2f2;
            }

            #data tr:hover {
                background-color: #ddd;
            }

            #data th {
                padding-top: 12px;
                padding-bottom: 12px;
                text-align: left;
                background-color: #03aa96;
                color: white;
            }

            #nav a {
                color: #03aa96;
                font-size: 20px;
                margin-top: 22px;
                font-weight: 600;
            }

            a:hover, a:visited, a:link, a:active {
                text-decoration: none;
            }

            #nav {
                margin-top: 20px;
            }
        </style>
    </head>
    <body>                  
        <h2 align="center" class="mt-4">How To Create Bootstrap Pagination Using jQuery - Websolutionstuff</h2>
        <div class="page" align="center">   
            <table id="data">  
                <tr>  
                    <th>Id</th>  
                    <th>Name</th>  
                    <th>Country</th>  
                </tr>  
                <tr>  
                    <td>1</td>  
                    <td>Maria</td>  
                    <td>Germany</td>  
                </tr>  
                <tr>  
                    <td>2</td>  
                    <td>Christina</td>  
                    <td>Sweden</td>  
                </tr>  
                <tr>  
                    <td>3</td>  
                    <td>Chang</td>  
                    <td>Mexico</td>  
                </tr>  
                <tr>  
                    <td>4</td>  
                    <td>Mendel</td>  
                    <td>Austria</td>  
                </tr>  
                <tr>  
                    <td>5</td>  
                    <td>Helen</td>  
                    <td>United Kingdom</td>  
                </tr>  
                <tr>  
                    <td>6</td>  
                    <td>Philip</td>  
                    <td>Germany</td>  
                </tr>  
                <tr>  
                    <td>7</td>  
                    <td>Tannamuri</td>  
                    <td>Canada</td>  
                </tr>  
                <tr>  
                    <td>8</td>  
                    <td>Rovelli</td>  
                    <td>Italy</td>  
                </tr>  
                <tr>  
                    <td>9</td>  
                    <td>Dell</td>
                    <td>United Kingdom</td>
                </tr>  
                <tr>  
                    <td>10</td>  
                    <td>Trump</td>  
                    <td>France</td>  
                </tr>  
            </table>  
        </div>
    </body>
</html>
<script src="https://code.jquery.com/jquery-3.6.1.min.js" integrity="sha256-o88AwQnZB+VDvE9tvIXrMQaPlFFSUTR+nldQm1LuPXQ=" crossorigin="anonymous"></script>
<script>
$(document).ready (function () {  
    $('#data').after ('<div id="nav"></div>');  
    var rowsShown = 5;  
    var rowsTotal = $('#data tbody tr').length;  
    var numPages = rowsTotal/rowsShown;  
    for (i = 0;i < numPages;i++) {  
        var pageNum = i + 1;  
        $('#nav').append ('<a href="#" rel="'+i+'">'+pageNum+'</a> ');  
    }  
    $('#data tbody tr').hide();  
    $('#data tbody tr').slice (0, rowsShown).show();  
    $('#nav a:first').addClass('active');  
    $('#nav a').bind('click', function() {  
    $('#nav a').removeClass('active');  
    $(this).addClass('active');  
        var currPage = $(this).attr('rel');  
        var startItem = currPage * rowsShown;  
        var endItem = startItem + rowsShown;  
        $('#data tbody tr').css('opacity','0.0').hide().slice(startItem, endItem).  
        css('display','table-row').animate({opacity:1}, 300);  
    });  
});
</script>

Output:

how_to_create_pagination_using_jquery_and_bootstrap

Example:

In this example, we will create pagination using the twbsPagination plugin. This jQuery plugin simplifies the usage of Bootstrap Pagination.

<!DOCTYPE html>
<html lang="en">
    <head>
        <title>jQuery Pagination Using Plugin - Websolutionstuff</title>
        <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha.6/css/bootstrap.min.css">
        <style>
            .wrapper{
                margin: 60px auto;
                text-align: center;
            }
            h2{
                margin-bottom: 1.25em;
            }
            
            #pagination-demo{
                display: inline-block;
                margin-bottom: 1.75em;
            }

            #pagination-demo li{
                display: inline-block;
            }

            .page-content{
                background: #eee;
                display: inline-block;
                padding: 10px;
                width: 100%;
                max-width: 660px;
            }
        </style>
    </head>
    <body>                  
        <div class="wrapper">
            <div class="container">
              
              <div class="row">
                <div class="col-sm-12">
                  <h2>jQuery Pagination Using Plugin - Websolutionstuff</h2>
                  <p>Simple pagination using the TWBS pagination JS library.</p>
                  <ul id="pagination-demo" class="pagination-sm"></ul>
                </div>
              </div>
          
              <div id="page-content" class="page-content">Page 1</div>
            </div>
          </div>
    </body>
</html>
<script src="https://code.jquery.com/jquery-3.6.1.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha.6/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twbs-pagination/1.4.1/jquery.twbsPagination.min.js"></script>
<script>
$(document).ready (function () {  
    $('#pagination-demo').twbsPagination({
        totalPages: 16,
        visiblePages: 6,
        next: 'Next',
        prev: 'Prev',
        onPageClick: function (event, page) {            
            $('#page-content').text('Page ' + page) + ' content here';
        }
    });
});
</script>

Output:

jquery_pagination_using_plugin

Original article source at: https://websolutionstuff.com/

#jquery #pagination 

 iOS App Dev

iOS App Dev

1620466520

Your Data Architecture: Simple Best Practices for Your Data Strategy

If you accumulate data on which you base your decision-making as an organization, you should probably think about your data architecture and possible best practices.

If you accumulate data on which you base your decision-making as an organization, you most probably need to think about your data architecture and consider possible best practices. Gaining a competitive edge, remaining customer-centric to the greatest extent possible, and streamlining processes to get on-the-button outcomes can all be traced back to an organization’s capacity to build a future-ready data architecture.

In what follows, we offer a short overview of the overarching capabilities of data architecture. These include user-centricity, elasticity, robustness, and the capacity to ensure the seamless flow of data at all times. Added to these are automation enablement, plus security and data governance considerations. These points from our checklist for what we perceive to be an anticipatory analytics ecosystem.

#big data #data science #big data analytics #data analysis #data architecture #data transformation #data platform #data strategy #cloud data platform #data acquisition

Arvel  Parker

Arvel Parker

1593156510

Basic Data Types in Python | Python Web Development For Beginners

At the end of 2019, Python is one of the fastest-growing programming languages. More than 10% of developers have opted for Python development.

In the programming world, Data types play an important role. Each Variable is stored in different data types and responsible for various functions. Python had two different objects, and They are mutable and immutable objects.

Table of Contents  hide

I Mutable objects

II Immutable objects

III Built-in data types in Python

Mutable objects

The Size and declared value and its sequence of the object can able to be modified called mutable objects.

Mutable Data Types are list, dict, set, byte array

Immutable objects

The Size and declared value and its sequence of the object can able to be modified.

Immutable data types are int, float, complex, String, tuples, bytes, and frozen sets.

id() and type() is used to know the Identity and data type of the object

a**=25+**85j

type**(a)**

output**:<class’complex’>**

b**={1:10,2:“Pinky”****}**

id**(b)**

output**:**238989244168

Built-in data types in Python

a**=str(“Hello python world”)****#str**

b**=int(18)****#int**

c**=float(20482.5)****#float**

d**=complex(5+85j)****#complex**

e**=list((“python”,“fast”,“growing”,“in”,2018))****#list**

f**=tuple((“python”,“easy”,“learning”))****#tuple**

g**=range(10)****#range**

h**=dict(name=“Vidu”,age=36)****#dict**

i**=set((“python”,“fast”,“growing”,“in”,2018))****#set**

j**=frozenset((“python”,“fast”,“growing”,“in”,2018))****#frozenset**

k**=bool(18)****#bool**

l**=bytes(8)****#bytes**

m**=bytearray(8)****#bytearray**

n**=memoryview(bytes(18))****#memoryview**

Numbers (int,Float,Complex)

Numbers are stored in numeric Types. when a number is assigned to a variable, Python creates Number objects.

#signed interger

age**=**18

print**(age)**

Output**:**18

Python supports 3 types of numeric data.

int (signed integers like 20, 2, 225, etc.)

float (float is used to store floating-point numbers like 9.8, 3.1444, 89.52, etc.)

complex (complex numbers like 8.94j, 4.0 + 7.3j, etc.)

A complex number contains an ordered pair, i.e., a + ib where a and b denote the real and imaginary parts respectively).

String

The string can be represented as the sequence of characters in the quotation marks. In python, to define strings we can use single, double, or triple quotes.

# String Handling

‘Hello Python’

#single (') Quoted String

“Hello Python”

# Double (") Quoted String

“”“Hello Python”“”

‘’‘Hello Python’‘’

# triple (‘’') (“”") Quoted String

In python, string handling is a straightforward task, and python provides various built-in functions and operators for representing strings.

The operator “+” is used to concatenate strings and “*” is used to repeat the string.

“Hello”+“python”

output**:****‘Hello python’**

"python "*****2

'Output : Python python ’

#python web development #data types in python #list of all python data types #python data types #python datatypes #python types #python variable type

Sid  Schuppe

Sid Schuppe

1617988080

How To Blend Data in Google Data Studio For Better Data Analysis

Using data to inform decisions is essential to product management, or anything really. And thankfully, we aren’t short of it. Any online application generates an abundance of data and it’s up to us to collect it and then make sense of it.

Google Data Studio helps us understand the meaning behind data, enabling us to build beautiful visualizations and dashboards that transform data into stories. If it wasn’t already, data literacy is as much a fundamental skill as learning to read or write. Or it certainly will be.

Nothing is more powerful than data democracy, where anyone in your organization can regularly make decisions informed with data. As part of enabling this, we need to be able to visualize data in a way that brings it to life and makes it more accessible. I’ve recently been learning how to do this and wanted to share some of the cool ways you can do this in Google Data Studio.

#google-data-studio #blending-data #dashboard #data-visualization #creating-visualizations #how-to-visualize-data #data-analysis #data-visualisation