connecting angularJS to plotly - javascript

So I want to use angularJS to get data from a server and plot the data using Plotly. I am running a server in the background. The HTML I am using is shown below. I think it is pretty straight forward.
<!DOCTYPE html>
<html>
<head>
<title>Testign Plotly</title>
<script type="text/javascript" src='plotly.min.js'></script>
<script type="text/javascript" src='jquery.min.js'></script>
<script type="text/javascript" src='angular.min.js'></script>
<script type="text/javascript" src='plotApp.js'></script>
</head>
<body ng-app='myApp'>
<div id="graph" style="width:600px;height:250px;"></div>
<script type="text/javascript" ng-controller='plotXY'>
// var data = [{
// x:[1,2,3,4],
// y:[5,3,6,12],
// }];
Plotly.plot( $('#graph')[0], {{data}} , {margin: {t:0}});
</script>
<hr><div ng-controller='plotXY'>{{data}}</div>
</body>
</html>
I have the angularJS script plotApp.js as shown below, also very simple ...
var app = angular.module('myApp', []);
app.controller('plotXY', function($scope, $http){
$scope.data = {};
$scope.refresh = function(){
$http.get('http://localhost:8080/data').success(function(data){
$scope.data = {};
for(k in data){$scope.data[k] = data[k].map(Number);}
$scope.data = [$scope.data];
});
};
$scope.refresh();
});
Now, The compiled HTML for this (saved from the browser) is shown below ...
<!DOCTYPE html>
<html><head>
<meta http-equiv="content-type" content="text/html; charset=windows-1252"><style type="text/css">#charset "UTF-8";[ng\:cloak],[ng-cloak],[data-ng-cloak],[x-ng-cloak],.ng-cloak,.x-ng-cloak,.ng-hide:not(.ng-hide-animate){display:none !important;}ng\:form{display:block;}.ng-animate-shim{visibility:hidden;}.ng-anchor{position:absolute;}</style>
<title>Testign Plotly</title>
<script type="text/javascript" src="Testign%20Plotly_files/plotly.js"></script><style></style>
<script type="text/javascript" src="Testign%20Plotly_files/jquery.js"></script>
<script type="text/javascript" src="Testign%20Plotly_files/angular.js"></script>
<script type="text/javascript" src="Testign%20Plotly_files/plotApp.js"></script>
</head>
<body class="ng-scope" ng-app="myApp">
<div id="graph" style="width:600px;height:250px;"></div>
<script class="ng-scope" type="text/javascript" ng-controller="plotXY">
// var data = [{
// x:[1,2,3,4],
// y:[5,3,6,12],
// }];
Plotly.plot( $('#graph')[0], {{data}} , {margin: {t:0}});
</script>
<hr><div class="ng-scope ng-binding" ng-controller="plotXY">[{"y":[1.26642e-14,2.8044e-14,6.1484e-14,1.33457e-13],"x":[-10,-9,-8,-7]}]</div>
</body></html>
As you can tell, the portion within the div gets updates with the right data. However, that within the script doesn't!
Just so you know, If I use the data variable (the one that is commented out), I am able to see the plot. So Plotly is working.
I want the client to pull data from the server and have plotly display it. I can do it if I create the entire page from the server and send it over. However, I think that this way is much better. However, for some reason, I dont seem to be able to connect the data source in Plotly, to that in angularJS. I would really appreciate some help ...

The Plotly-method of updating the data seems to be through Plotly.restyle():
var update = {x: [[0,1,2], y: [[5,2,4]]};
Plotly.restyle(graphDiv, update, 0);
Just make sure that you use double arrays when you want to update an array. Plotly supports updating multiple traces at once via arrays, so [[0,1,2],[1,3,4]] would update two traces

Related

Why does a BokehJS example fail in the browser?

I'm trying to figure out if BokehJS can meet my plotting needs for a minor dev project. When I try to copy the last example found on https://docs.bokeh.org/en/latest/docs/user_guide/bokehjs.html it fails with this backtrace in Chrome:
Uncaught TypeError: Cannot read property 'classList' of null
at c (bokeh-1.3.4.min.js:31)
at Object.n.add_document_standalone (bokeh-1.3.4.min.js:31)
at Object.t.show (bokeh-api-1.3.4.min.js:31)
at bokeh.html:58
The example is copied verbatim into a file, bokeh.html, and opened directly in the browser. bokeh.html:58 is the line
Bokeh.Plotting.show(plot);
The example is supposed to be a complete standalone html file so I must be missing something obvious here. My copy of the example can be found here https://pastebin.com/VizzJbH4
Any hints are greatly appreciated.
Move script tag with code at the end instead of head tag.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Complete Example</title>
<script type="text/javascript" src="https://cdn.bokeh.org/bokeh/release/bokeh-2.1.1.min.js" integrity="sha384-kLr4fYcqcSpbuI95brIH3vnnYCquzzSxHPU6XGQCIkQRGJwhg0StNbj1eegrHs12" crossorigin="anonymous"></script>
<script type="text/javascript" src="https://cdn.bokeh.org/bokeh/release/bokeh-widgets-2.1.1.min.js" integrity="sha384-xIGPmVtaOm+z0BqfSOMn4lOR6ciex448GIKG4eE61LsAvmGj48XcMQZtKcE/UXZe" crossorigin="anonymous"></script>
<script type="text/javascript" src="https://cdn.bokeh.org/bokeh/release/bokeh-tables-2.1.1.min.js" integrity="sha384-Dc9u1wF/0zApGIWoBbH77iWEHtdmkuYWG839Uzmv8y8yBLXebjO9ZnERsde5Ln/P" crossorigin="anonymous"></script>
<script type="text/javascript" src="https://cdn.bokeh.org/bokeh/release/bokeh-gl-2.1.1.min.js" integrity="sha384-cT9JaBz7GiRXdENrJLZNSC6eMNF3nh3fa5fTF51Svp+ukxPdwcU5kGXGPBgDCa2j" crossorigin="anonymous"></script>
<script type="text/javascript" src="https://cdn.bokeh.org/bokeh/release/bokeh-api-2.1.1.min.js" integrity="sha384-i2RsfqLVG6PTrWCD55m8pYN9N2XZRkYVASzqjzp79o0OpPmcp+APyuwCfItW7Kn2" crossorigin="anonymous"></script>
<script>
//The order of CSS and JS imports above is important.
</script>
</head>
<body>
</body>
<script>
// create a data source to hold data
var source = new Bokeh.ColumnDataSource({
data: { x: [], y: [] }
});
// make a plot with some tools
var plot = Bokeh.Plotting.figure({
title:'Example of Random data',
tools: "pan,wheel_zoom,box_zoom,reset,save",
height: 300,
width: 300
});
// add a line with data from the source
plot.line({ field: "x" }, { field: "y" }, {
source: source,
line_width: 2
});
// show the plot, appending it to the end of the current section
Bokeh.Plotting.show(plot);
function addPoint() {
// add data --- all fields must be the same length.
source.data.x.push(Math.random())
source.data.y.push(Math.random())
// notify the DataSource of "in-place" changes
source.change.emit()
}
var addDataButton = document.createElement("Button");
addDataButton.appendChild(document.createTextNode("Add Some Data!!!"));
document.currentScript.parentElement.appendChild(addDataButton);
addDataButton.addEventListener("click", addPoint);
addPoint();
addPoint();
</script>
</html>

Calling .jSignature() on div doesn't update the div

I got this code from the GitHub:
<script src="path/to/jSignature.min.js"></script>
<script>
$(document).ready(function() {
$("#signature").jSignature()
})
</script>
<div id="signature"></div>
But it doesn't pull anything up on the actual webpage. I would think there is more code required but I don't know where to start.
Here is a minimal working example
<!DOCTYPE html>
<html lang="en">
<head>
<lang>
<title>Minimal working jSignature Example</title>
<meta charset="UTF-8">
<!-- Files from the origin -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script src="https://willowsystems.github.io/jSignature/js/libs/jSignature.min.js"></script>
<head>
<script>
$(document).ready(function() {
// Initialize jSignature
$("#signature").jSignature();
})
// ripped from the description at their the Github page
function getBase64Sig(){
// get the element where the signature have been put
var $sigdiv = $("#signature");
// get a base64 URL for a SVG picture
var data = $sigdiv.jSignature("getData", "svgbase64");
// build the image...
var i = new Image();
i.src = "data:" + data[0] + "," + data[1];
// and put it somewhere where the sun shines brightly upon it.
$(i).appendTo($("#output"));
}
</script>
<body>
Put your signature here:
<div id="signature"></div>
<button onclick="getBase64Sig()">Get Base64</button>
<div id="output"></div>
</body>
</html>
I hope you can go on from here.
It is really as simple as they describe it to be, only their description of the actual example is a bit lacking for beginners.

Angular.js - Convert string with special characters and numbers into Array and display with ng-repeat

I am new to angular.js and I'm having an issue with converting string into array and displaying it with ng-repeat, so far i got this custom filter from a stackoverflow question and the codes are:
JS:
var app = angular.module('globalModule', [])
app.controller("SampleController", function($scope){
$scope.data = "123abc123";
});
app.filter("spaceBreak",
function () {
return function ( value ) {
if( !value.length ) return;
return value.split("");
}
});
HTML:
<body ng-controller="SampleController">
<h4 id="id_{{$index}}" ng-repeat="value in data | spaceBreak"><span ng-bind="value"></span></h4>
</body>
My problem is, it converts and display properly if it is an alphabet(abc) or a number(123) alone, and if combined (abc123) or (123abc) still good, but if the data is number+alphabet+number (123abc123) it doesnt show anymore in ng-repeat. I am really lost and really need help. Hope someone can lend me an answer.
I think what you are looking for is the track by $index functionality. You code errors out because you have duplicates in your $scope.data. That filter isn't really doing anything for you, so you can just ng-repeat through your $scope.data string.
var app = angular.module('globalModule', [])
app.controller("SampleController", function($scope){
$scope.data = "123abc123";
})
<!DOCTYPE html>
<html ng-app="globalModule">
<head>
<script data-require="angular.js#1.5.0" data-semver="1.5.0" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.0/angular.js"></script>
<link rel="stylesheet" href="style.css" />
<script src="script.js"></script>
</head>
<body ng-controller="SampleController">
<h4 id="id_{{$index}}" ng-repeat="value in data track by $index"><span ng-bind="value"></span></h4>
</body>
</html>

Webpage is displaying curly braces from expressions using Angular1.4

As I'm new to Angular, I expect to run in to issues however this issue seems to be repeating itself off and on.
As I'm following a tutorial on learning Angular here, I was learning about how to use expressions.
What I'm attempting to do is access an gem's attributes and display them on the webpage. However, the object values are not being accessed and it is just displaying as so:
{{store.product.name}}
${{store.product.price}}
{{store.product.description}}
Add to Cart
Where as I want it to display as:
Dodecahaderon
$2.95
. . .
Add to Cart
I thought it may be due to the videos using Angular1.2 and I'm using 1.4 however I'm not sure. What am I doing wrong and how can I properly display the object attributes?
Here is the code:
(function () {
var app = angular.module('store', []);
app.controller('StoreController', function(){
this.product = gem;
});
var gem = {
name: 'Dodecahaderon',
price: 2.95,
description: '. . . ',
canPurchase = true,
soldOut = true
};
})();
<!DOCTYPE html>
<html ng-app="store">
<head>
<link rel="stylesheet" type="text/css" href="bootstrap.min.css" />
</head>
<body ng-controller="StoreController as store">
<div ng-hide="store.product.soldOut">
<h1>{{store.product.name}}</h1>
<h2>${{store.product.price}}</h2>
<p>{{store.product.description}}</p>
<button ng-show="store.product.canPurchase">Add to Cart</button>
</div>
<script type="text/javascript" src="angular.min.js"></script>
<script type="text/javascript" src="app.js"></script>
</body>
</html>
Your angular library is not referenced correctly. Open your console window and make sure the angular script reference is actually working.
Currently gem is definied outside the scope of the controller. Also, as gem as an object you must change = to :
You need to change your code to this and it works
(function () {
var app = angular.module('store', []);
app.controller('StoreController', function(){
this.item = {
name: 'Dodecahaderon',
price: 2.95,
description: '. . . ',
canPurchase : true,
soldOut : true
};
});
})();
And your html to this:
<!DOCTYPE html>
<html ng-app="store">
<head>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.15/angular.min.js"></script>
</head>
<body ng-controller="StoreController as store">
<div ng-hide="store.product.soldOut">
<h1>{{store.item.name}}</h1>
<h2>${{store.item.price}}</h2>
<p>{{store.item.description}}</p>
<button ng-show="store.item.canPurchase">Add to Cart</button>
</div>
</body>
</html>
Also, you may need to replace your reference to angular from <script type="text/javascript" src="angular.min.js"></script> to <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.15/angular.min.js"></sc‌​ript>

angularjs cookies with latest versions 1.4.1

Hello i want to store one sample cookie in my browser and read it.this not working for me
this is sample html code :
<!DOCTYPE html>
<html ng-app="KendoDemos">
<head>
<script src="/home/user/Desktop/kendo/angular.min.js"></script>
<script src="/home/user/Desktop/kendo/angular-cookies.min.js"></script>
<script src="/home/user/Desktop/kendo/app.js"></script>
</head>
<!-- Body tag augmented with ngController directive -->
<body ng-controller="MyCtrl">
<h1>Hello</h1>
</body>
</html>
and this my app.js file :
var app = angular.module("KendoDemos", ["ngCookies"]);
app.controller("MyCtrl",['$scope','$cookies','$cookieStore',MyCtrl]);
function MyCtrl($scope,$cookies,$cookieStore){
var favoriteCookie = $cookies.get('myFavorite');
// Setting a cookie
$cookies.put('myFavorite', 'oatmeal');
console.log(favoriteCookie);
}
Please help me.
I think you don't have a problem is really logical that your cookie myFavorite isn't set before putting it so you have to switch the instruction of setting and getting.
var app = angular.module("KendoDemos", ["ngCookies"]);
app.controller("MyCtrl",['$scope','$cookies','$cookieStore',MyCtrl]);
function MyCtrl($scope,$cookies,$cookieStore){
// Setting a cookie
$cookies.put('myFavorite', 'oatmeal');
var favoriteCookie = $cookies.get('myFavorite');
console.log(favoriteCookie);
}

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