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JavaScript Array JSON.parse (string) - javascript

I am using eCharts (a JavaScript charting library) and there is something that's doing my head in. The examples use the following code for markLine (and it works as expected)
markLine : {
symbol: 'none',
tooltip: {show: false},
itemStyle:{
normal:{
lineStyle:{
type: 'solid',
color: '#CCCCCC'
},
tooltip:{
show: false
}
}
},
data: [ [{ "xAxis" : 250, "yAxis" : 0 }, {"xAxis": 250, "yAxis" : 250 }] ]
}
I need to be able to get the data part as a JSON string, but I cannot get it to work. Note: For simplicity, I have the same JSON information I receive as a string called arrayString:
markLine : {
symbol: 'none',
tooltip: {show: false},
itemStyle:{
normal:{
lineStyle:{
type: 'solid',
color: '#CCCCCC'
},
tooltip:{
show: false
}
}
},
data: (function (){
var res = [];
var arrayString = "";
arrayString = '[{ "xAxis" : 250, "yAxis" : 0 }, {"xAxis": 250, "yAxis" : 250 }]';
res = JSON.parse(arrayString);
return res;
})()
}
When I run the JSON.parse code the chart doesn't display, but if I console.log the value of 'res' the array appears to be created correctly.
Is anyone able to assist me with resolving this?
References:
Both of these examples use markLine:
http://echarts.baidu.com/echarts2/doc/example/line1.html#-en
http://echarts.baidu.com/echarts2/doc/example/bar13.html#-en

Should you be adding to your res array rather than overwiting it?
res.push(JSON.parse(arrayString));

Related

Referring this example to create scatter graph using echarts library:
Basic Scattergraph
My code for this is as follows:
option ={
xAxis : [
{
type : 'value',
scale:true
}
],
yAxis : [
{
type : 'value',
scale:true
}
],
series : [
{
symbolSize: 40,
itemStyle: {
normal: {
color: 'lightblue',
borderWidth: 4,
label : {
show: true,
position: 'inside',
formatter: function(v)
{
if (v==[161.2, 51.6])
return 'a'
else
return v
}
}
}
},
type:'scatter',
data: [
[161.2, 51.6],[167.5, 59.0],[157.0, 63.0],[155.8, 53.6],
[170.0, 59.0], [166.0, 69.8], [176.2, 66.8]
],
}
]
};
In the formatter function inside series I am trying to match my variable 'v' with a coordinate point from data. But that condition is not satisfied. Where am I going wrong? I only see [object Object] in all the bubbles. Please help.

If you are using the Echarts2.x version, code is as follow:
option ={
xAxis : [
{
type : 'value',
scale:true
}
],
yAxis : [
{
type : 'value',
scale:true
}
],
series : [
{
symbolSize: 40,
itemStyle: {
normal: {
color: 'lightblue',
borderWidth: 4,
label : {
show: true,
position: 'inside',
formatter: function(data){
var v = data.value;
if (v[0]==161.2 && v[1]==51.6)
return 'a'
else
return v
}
}
}
},
type:'scatter',
data: [
[161.2, 51.6],[167.5, 59.0],[157.0, 63.0],[155.8, 53.6],
[170.0, 59.0], [166.0, 69.8], [176.2, 66.8]
],
}
]
};
the parameter of formatter function is an object which is a point object on the scatter, Its structure is as follow:
$vars:Array[3]
color:"lightblue"
componentSubType:"scatter"
componentType:"series"
data:Array[2]
dataIndex:0
dataType:undefined
name:""
seriesIndex:0
seriesName:"-"
seriesType:"scatter"
status:"normal"
value:Array[2]
So the parameter isn't the array you wanted.
The itemStyle attribute is used to set the graphic style, The label attribute is used to set the text label on the graph, which can be used to explain some data information of the graph. Such as value, name, etc. In Echarts3.x in order to make the structure of entire configuration more flat and reasonable, label was taken out with itemStyle at the same level. like itemStyle have two states of normal and emphasis. if you are using Echarts3.x version, code is like as follow:
option ={
xAxis : [
{
type : 'value',
scale:true
}
],
yAxis : [
{
type : 'value',
scale:true
}
],
series : [
{
symbolSize: 40,
itemStyle: {
normal: {
color: 'lightblue',
borderWidth: 4,
}
},
label : {
normal: {
show: true,
position: 'inside',
formatter: function(data){
var v = data.value;
if (v[0]==161.2 && v[1]==51.6)
return 'a'
else
return v
}
}
},
type:'scatter',
data: [
[161.2, 51.6],[167.5, 59.0],[157.0, 63.0],[155.8, 53.6],
[170.0, 59.0], [166.0, 69.8], [176.2, 66.8]
],
}
]
};

So I have a highchart where I would like to display datalabels only on the first point of each stack (i.e. where the 0 point is)
my config looks like:
{
chart: {type: 'bar'},
plotOptions: {
series: {
stacking: 'percent',
dataLabels: {
enabled: true,
allowOverlap: true,
formatter: function () {
if (pointIsFirstInStack(this)) {
return labelFunction(this);
}
return '';
}
}
}
},
series: [{
name: 'Available',
data: [
{x: 'Event1', y: 18},
{x: 'Event2', y: 20}
]
}, {
name: 'Purchased',
data: [
{x: 'Event1', y: 23},
{x: 'Event2', y: 40}
]
}]
}
But I'm having a hard time implementing the pointIsFirstInStack function, any ideas?
regards,
Einar
JSFiddle to illustrate my chart: http://jsfiddle.net/qam37suh/
edit: added series and stacking to the config example
edit2: added JSFiddle

You can check the series index.
If you are always going to have two series, you can check it like this:
formatter: function(){
return this.series.index == 1 ? this.x : null;
}
Example:
http://jsfiddle.net/jlbriggs/jL6zrt7d/
Highcharts stacks the series in reverse by default, so index 0 is stacked on the top.
If you are going to have a dynamic number of series, you can add a check for the number of series first, so that you are still checking for the last series:
formatter: function(){
var len = this.series.chart.series.length -1;
return this.series.index == len ? this.x : null;
}
Example:
http://jsfiddle.net/jlbriggs/jL6zrt7d/1/
( You could also set reversedStacks: false on your yAxis, and instead just check for index == 0
Example:
http://jsfiddle.net/jlbriggs/jL6zrt7d/3/
)
Or, if your goal is to put the categories inside the series instead of outside, you could just move them:
xAxis: {
categories: ['Event1', 'Event2'],
labels: {
x: 60,
style: {
fontWeight: 'bold',
color: 'rgba(255,255,255,0.75)'
}
}
}
Example:
http://jsfiddle.net/jlbriggs/jL6zrt7d/2/

I have a small problem with my Highcharts maps. I managed to get it plotting the data I want and even included a selector so the user can adjust which data series is shown. However, it appears that after rendering one particular series once, the Map is appending data objects to each series for those U.S. territories I don't have data for. My biggest series has 53 data objects (US States plus DC, Puerto Rico, Virgin Islands) but after being rendered once the series shows up with 62 structures including those for which I didn't have data (Saint John, Saipan, etc.). This is causing problems with the snippet of code I use to change the state code to the hc-key format needed by this map. While I could just add some extra checks to that function, i would like to understand why Highcharts is adding data to my data structures. Any help would be most appreciated. My Javascript code is below:
<script type="text/javascript">
var states ={resStates: [{code: "AK",value:3},{code: "AL",value:49},{code: "AR",value:9},{code: "AZ",value:28},{code: "CA",value:170},{code: "CO",value:26},{code: "CT",value:12},{code: "DC",value:10},{code: "DE",value:5},{code: "FL",value:126},{code: "GA",value:51},{code: "HI",value:7},{code: "IA",value:5},{code: "ID",value:13},{code: "IL",value:31},{code: "IN",value:28},{code: "KS",value:15},{code: "KY",value:12},{code: "LA",value:17},{code: "MA",value:54},{code: "MD",value:124},{code: "ME",value:13},{code: "MI",value:60},{code: "MN",value:8},{code: "MO",value:19},{code: "MS",value:16},{code: "MT",value:6},{code: "NC",value:43},{code: "ND",value:3},{code: "NE",value:10},{code: "NH",value:14},{code: "NJ",value:72},{code: "NM",value:35},{code: "NV",value:7},{code: "NY",value:70},{code: "OH",value:84},{code: "OK",value:23},{code: "OR",value:11},{code: "PA",value:101},{code: "PR",value:2},{code: "RI",value:20},{code: "SC",value:26},{code: "SD",value:5},{code: "TN",value:19},{code: "TX",value:91},{code: "UT",value:67},{code: "VA",value:112},{code: "VI",value:1},{code: "VT",value:1},{code: "WA",value:29},{code: "WI",value:13},{code: "WV",value:2},{code: "WY",value:4}],
acadStates: [{code: "AK",value:1},{code: "AL",value:47},{code: "AR",value:12},{code: "AZ",value:31},{code: "CA",value:163},{code: "CO",value:34},{code: "CT",value:9},{code: "DC",value:18},{code: "DE",value:7},{code: "FL",value:121},{code: "GA",value:80},{code: "HI",value:6},{code: "IA",value:9},{code: "ID",value:9},{code: "IL",value:29},{code: "IN",value:55},{code: "KS",value:16},{code: "KY",value:8},{code: "LA",value:14},{code: "MA",value:65},{code: "MD",value:81},{code: "ME",value:8},{code: "MI",value:66},{code: "MN",value:7},{code: "MO",value:20},{code: "MS",value:13},{code: "MT",value:4},{code: "NB",value:1},{code: "NC",value:53},{code: "ND",value:4},{code: "NE",value:8},{code: "NH",value:13},{code: "NJ",value:32},{code: "NM",value:32},{code: "NV",value:4},{code: "NY",value:93},{code: "OH",value:83},{code: "OK",value:25},{code: "OR",value:7},{code: "PA",value:123},{code: "PR",value:2},{code: "RI",value:15},{code: "SC",value:17},{code: "SD",value:4},{code: "TN",value:9},{code: "TX",value:103},{code: "UT",value:62},{code: "VA",value:114},{code: "VT",value:2},{code: "WA",value:27},{code: "WI",value:19},{code: "WV",value:4},{code: "WY",value:4}],
empStates: [{code: "AK",value:2},{code: "AL",value:71},{code: "AR",value:4},{code: "AZ",value:12},{code: "CA",value:235},{code: "CO",value:1},{code: "DC",value:36},{code: "FL",value:104},{code: "GA",value:70},{code: "HI",value:5},{code: "IL",value:17},{code: "IN",value:18},{code: "KS",value:14},{code: "LA",value:5},{code: "MA",value:61},{code: "MD",value:244},{code: "MI",value:39},{code: "MN",value:3},{code: "MO",value:4},{code: "MS",value:64},{code: "NC",value:22},{code: "NE",value:2},{code: "NH",value:20},{code: "NJ",value:62},{code: "NM",value:95},{code: "NY",value:22},{code: "OH",value:133},{code: "OK",value:53},{code: "OR",value:7},{code: "PA",value:38},{code: "RI",value:37},{code: "SC",value:26},{code: "TN",value:9},{code: "TX",value:22},{code: "UT",value:75},{code: "VA",value:126},{code: "WA",value:22},{code: "WV",value:2}]};
$(init)
function init() {
drawMap();
}
function drawMap() {
var map_select = $('#smartStates').val();
var map_text = $('#smartStates option:selected').text();
var mydata = states[map_select];
var mycolors = {resStates: {
min: 1,
type: 'linear',
minColor: '#EEEEFF',
maxColor: '#000022',
stops: [
[0, '#EFEFFF'],
[0.67, '#4444FF'],
[1, '#000022']
]
}, acadStates: {
min: 1,
type: 'linear',
minColor: '#FFEEEE',
maxColor: '#220000',
stops: [
[0, '#FFFFEE'],
[0.67, '#FF4444'],
[1, '#220000']
]
}, empStates: {
min: 1,
type: 'linear',
minColor: '#EEFFEE',
maxColor: '#002200',
stops: [
[0, '#EEFFEE'],
[0.67, '#44FF44'],
[1, '#002200']
]
}
}
// Adjusting codes to fit with the us-all-territories map
$.each(mydata, function(){ //looping through each instance of mydata
if (this.code == "PR") {
this.code = "pr-3614";
} else if (this.code == "undefined"){
//not sure what to do here
}
else if (this.code.length==2) {
this.code = "us-" + this.code.toLowerCase();
}
});
// Instanciate the map
$('#container').highcharts('Map', {
chart : {
borderWidth : 1
},
title : {
text : 'SMART Participant Counts by ' + map_text
},
legend: {
layout: 'horizontal',
borderWidth: 0,
backgroundColor: 'rgba(255,255,255,0.85)',
floating: true,
verticalAlign: 'top',
y: 25
},
mapNavigation: {
enabled: true
},
colorAxis: mycolors[map_select],
series : [{
animation: {
duration: 1000
},
data : mydata,
mapData: Highcharts.maps['countries/us/custom/us-all-territories'],
joinBy: ['hc-key', 'code'],
dataLabels: {
enabled: true,
color: '#FFFFFF',
format: '{point.name}'
},
name: 'SMART Participants',
tooltip: {
pointFormat: '{point.name}: {point.value} participants'
}
}]
});
}
</script>

This is because in your mapData property you have this:
mapData: Highcharts.maps['countries/us/custom/us-all-territories'],
us-all-territories, but as you stated, you don't have the data for all of the territories.
The solution is to use a different custom map from Highcharts, unfortunately it doesn't look like they have one with only the US territories you are looking for.
Update: as the comment by Kacper has mentioned: If you set allAreas in series to false, then empty map zones will not be displayed. Example: http://jsfiddle.net/oen00hec/

I am attempting to take the example produced by Highcharts here http://www.highcharts.com/maps/demo/color-axis and substitute the data loaded by the $.getJson with a local JSON file called 'testdata1.json'.
The code I've modified below produces no errors yet the map does not render. I think it's because the testdata1.json is loaded late, after the javascript is executed. If so, is there a better way I should be doing this -- perhaps waiting for the data to load before executing the JS file? I attempted to do this by placing a
$(document).ready(
in front of the function but it didn't work. Any thoughts are greatly appreciated, I think it's something relatively minor that is just escaping me.
Thank you.
$(function () {
// Map options
var options = {
chart : {
renderTo: '#map',
borderWidth : 1
},
title : {
text : 'US population density (/km²)'
},
legend: {
layout: 'horizontal',
borderWidth: 0,
backgroundColor: 'rgba(255,255,255,0.85)',
floating: true,
verticalAlign: 'top',
y: 25
},
mapNavigation: {
enabled: true
},
colorAxis: {
min: 1,
type: 'logarithmic',
minColor: '#EEEEFF',
maxColor: '#000022',
stops: [
[0, '#EFEFFF'],
[0.67, '#4444FF'],
[1, '#000022']
]
},
series : [{
animation: {
duration: 1000
},
mapData: Highcharts.maps['countries/us/us-all'],
joinBy: ['postal-code', 'code'],
dataLabels: {
enabled: true,
color: 'white',
format: '{point.code}'
},
name: 'Population density',
tooltip: {
pointFormat: '{point.code}: {point.value}/km²'
}
}]
};
$.getJSON('static/data/testdata1.json', function (data) {
// Make codes uppercase to match the map data
$.each(data, function () {
this.code = this.code.toUpperCase();
});
options.series.data= data;
var chart = new Highcharts.Chart(options)
});
});

You have three problems. Here's a fiddle based on their sample that uses your approach, but still uses their data, and works: http://jsfiddle.net/g29k24vw/1/
Here are the important parts:
chart : {
renderTo: 'container',
borderWidth : 1,
type: 'map'
},
And:
$.getJSON('http://www.highcharts.com/samples/data/jsonp.php?filename=us-population-density.json&callback=?', function (data) {
// Make codes uppercase to match the map data
$.each(data, function () {
this.code = this.code.toUpperCase();
});
options.series[0].data= data;
var chart = new Highcharts.Chart(options);
});
Note the differences here:
You need to specify the chart type in options if you're going to instantiate the chart object directly instead of using the jQuery helper.
renderTo doesn't want a hash in front of the element name.
options.series[0].data, not options.series.data...series is actually an array of objects.

I am working on drawing graphs from our data. There is no problem on drawing graph basically. The only problem is that the flags information is not loaded and located on the graph lines. Let me give you the issues on it.
Data cannot be brought to the graph if it has over 900 numbers of items.
One data might have more than 4000 items.
Instead using one big data, I tried to spilt one data into small pieces of data. Each piece of data has 800 items, and they are intended being loaded on the graph sequentially. However, this process was not easily done well. Sometime the graph module cannot load every piece exactly. Moreover, this process take much time than using one data.
I wonder whether an appropriate way to load flag data which contains many items exits or not.
$(function() {
var report_data;
$.ajax({
type: "post",
url:"/apps.chart/chart.reportShort",
data:"callback=?&report_type=CO&business_code=005930",
dataType:"json",
success:function(report){
report_data = report;
}
});
$.getJSON('/apps.chart/chart.chartList?callback=?&report_type=CO&business_code=005930', function(data) {
// Create the chart
$('#chartView').highcharts('StockChart', {
chart: {
plotBorderColor: '#346691',
plotBorderWidth: 2,
height: 600
},
rangeSelector : {
inputEnabled: $('#chartView').width() > 400,
selected : 1
},
title : {
text : 'SK'
},
tooltip: {
type: 'datetime',
dateTimeLabelFormats: {
day: '%Y년 %m월 %d일'
},
style: {
width: '300px'
},
valueDecimals: 0
},
xAxis: {
type: 'datetime',
dateTimeLabelFormats: {
day: '%m.%d',
week: '%m.%d',
month: '%Y.%m',
year: '%Y'
}
},
yAxis : {
labels : {
formatter : function() {
var n = this.value;
var reg = /(^[+-]?\d+)(\d{3})/;
n += '';
while (reg.test(n))
n = n.replace(reg, '$1' + ',' + '$2');
return n;
},
align : 'left',
x : 5,
y : 2
},
maxPadding: 0.2,
minPadding: 0,
minorTickInterval: 'auto',
title : {
text : '금액(원)',
}
},
series : [{
name : '종가',
data : data,
id : 'dataseries',
marker : {
enabled : true,
radius : 3
},
shadow : true,
tooltip : {
valueDecimals : 0
}
}
// the event marker flags
,{
type : 'flags',
data : report_data,
style: {
cursor: 'hand'
},
onSeries : 'dataseries',
shape : 'circlepin',
width : 15,
height : 15,
color : '#121212'
}
]
});
});
});

Probably the problem is that you call two ajax asynchronously, so I advice you to next ajax insiae first callback and then initialise chart.