is there any way to create shape or create marks on chart in custom indicator using tradingview charting library. I am using this way to create custom indicators. Thanks in advance.
Yes you can. Here is the guide.
For the callouts/Markers on chart you can follow this guide in the JS API.
https://github.com/tradingview/charting_library/wiki/JS-Api#gettimescalemarkssymbolinfo-from-to-ondatacallback-resolution
For getmarks you can do this
getMarks: (symbolInfo, startDate, endDate, onDataCallback, resolution) => {
var Arr = [
{
id: 1,
time: 1551448800000 / 1000,
color: 'blue',
text: 'Hello world',
label: 'B',
labelFontColor: 'yellow',
minSize: 20
},
]
onDataCallback(Arr);
console.log("=====getMarks running");
},
It will plot the marks above the bars as shown in the below image.
For Timescalemarks.
getTimescaleMarks: (symbolInfo,startDate,endDate,onDataCallback,resolution) => {
onDataCallback([
{
id: 1,
time: / 1000,
color: 'Turquoise',
label: 'The test you want to show on marker',
minSize: 20,
tooltip:[
"Information you want to print",
]
},
]);
})
The Time scale marks will look like this. And they will be plotted below the bars.
And for the shapes like circles and arrows you can follow this documentation. And use the createMultipointShape(points, options) methos to plot your shapes.
https://github.com/tradingview/charting_library/wiki/Chart-Methods#createmultipointshapepoints-options
Related
I'm using react-native-charts-wrapper for creating a chart and I was wondering if there is a way to change the x-axis label style for just one bar? I have a whole week in the chart and I want to change the color of the current day. So if today is Monday I just want the M to be a different color. I don't want to change the color of the bar, just the letter under it.
These are settings for xAxis:
xAxis: {
drawAxisLine: true,
drawGridLines: false,
position: 'BOTTOM',
labelCount: 7,
valueFormatter: ['M', 'T', 'W', 'T', 'F', 'S', 'S'],
textColor: formatedColor,
axisMinimum: -1,
axisMaximum: 7,
avoidFirstLastClipping: true,
},
I checked the documentation and properties but couldn't find anything.
I think I know
core:google.charts.load('current');
ChartType: ColumnChart;
Don't use the bar
google.charts.load('current');
google.charts.setOnLoadCallback(drawVisualization);
function drawVisualization() {
var wrapper = new google.visualization.ChartWrapper({
chartType: 'ColumnChart',
dataTable: [
['Element', 'Density', { role: 'style' }],
['Copper', 8.94, '#b87333'],
['Silver', 10.49, 'silver'],
['Gold', 19.30, 'gold'],
['Platinum', 21.45, 'color: #e5e4e2' ],
],
options: {'title': 'Countries'},
containerId: 'columnchart_values'
});
wrapper.draw();
}
I used this exmaple http://dygraphs.com/tests/smooth-plots.html to draw smooth lines. When I anable the smoothing by plotter: smoothPlotter small dots at data points disappear. I have set drawPoints: true. Dot is displayed when mouse is on the curve.
How can I enable small dots at data points ( http://dygraphs.com/options.html#drawPoints ) and still use smoothing?
I have not found a way to enable pointdrawing. But you can make a second series with the same data and draw only the points, not the lines. Like so:
new Dygraph(document.getElementById('graph'),
functionData,
{
series: {
Straight: {
color: 'red',
strokeWidth: 0,
drawPoints: true,
pointSize: 7
},
Smoothed: {
plotter: smoothPlotter,
color: 'red',
strokeWidth: 2
}
},
});
http://jsfiddle.net/wLxs4ju1/
I am using morris.js (which has a dependency on raphael) for creating stacked bar graphs. For each stacked bar I want to show the split for the various levels in the bar as a tooltip. I tried using the hoverCallback: but it doesn't seem to give me control over the particular element I am hovering over. I only get the content for that particular bar.
I have setup a JSBIN example for the same here:
When you hover over the bar it shows the index of the bar at the bottom. I want to show the content as a tool tip instead.JSBIN example
Piece of cake. Demo and code:
<script type="text/javascript">
Morris.Bar({
element: 'bar-example',
data: [
{y: '2006',a: 100,b: 90},
{y: '2007',a: 75,b: 65},
{y: '2008',a: 50,b: 40},
{y: '2009',a: 75,b: 65},
{y: '2010',a: 50,b: 40},
{y: '2011',a: 75,b: 65},
{y: '2012',a: 100,b: 90}
],
hoverCallback: function(index, options, content, row) {
return(content);
},
xkey: 'y',
ykeys: ['a', 'b'],
stacked: true,
labels: ['Series A', 'Series B'] // rename it for the 'onhover' caption change
});
</script>
ARGUMENTS:
1: index: it represents record number i.e. from 0 to n records.
2: content: this is default hover div.
3: option : you data is inside this, before return(content);. do console.log(options) to view details.
4: row : to see the use of row below is an example.
hoverCallback: function (index, options, content, row) {
console.log(row);
var hover = "<div class='morris-hover-row-label'>"+row.period+"</div><div class='morris-hover-point' style='color: #A4ADD3'><p color:black>"+row.park1+"</p></div>";
return hover;
},
UPD:
For flying label, you need to add Morris CSS stylesheet to the code - demo
IMPORTANT NOTE
Flying labels works since version 0.4.3
http://jsbin.com/finuqazofe/1/edit?html,js,output
{ y: ..., x: ..., label: "my own label"},'
...
Morris.Line({
hoverCallback: function(index, options, content) {
var data = options.data[index];
$(".morris-hover").html('<div>Custom label: ' + data.label + '</div>');
},
...
other params
});
I am using Sencha Touch charts 1.0.0 for my project. I would like to add values on each point in my line chart (as in image). I tried the same approach in this question for column chart, but it didn't work out.
I had the same problem with you. But i find a solution instead for that. You can add marker at each node of line and when you click on marker a popup will show detail information as you want. This's my code may help you :
-Add marker in cofig of series :
type: 'line',
title: 'Clickeds : ' + total[4] + ' ( ' + Math.round(arrInfo[4]) + '% )',
highlightCfg: { scale : 0.7 },
xField: 'Date', yField: 'Clks',
style : {
stroke: 'rgb(50, 185, 150)',
miterLimit : 3,
lineCap: 'miter',
lineWidth: 2
}
,
marker:{
type: 'image',
src: 'resources/images/square.png',
width: 24,
height: 24,
x: -12,
y: -12,
scale: 0.5,
fx: {
duration: 200
}
}
Handle event when you click on node, you add listeners to config of chart : `listeners: {
itemtap: function( series, item, event, eOpts ){
//handle your code here.
}`
Regards,
(Sorry for bad english.)
I've been using the Dojo charting to create a Columns chart. I'm very impressed by it so far, but have decided I need a logarithmic y axis. Doesn't look like this is supported so far, though I've seen a blog entry implying it was planned at some point.
Does anyone know it it is possible at the moment? If not, then I'm happy to try writing the enhancement myself, so if anyone has some tips on where to start, they would be gratefully received. I suspect it's case of implementing a new Scale type, though I haven't spent much time digging through the source yet.
Thanks,
Martin.
dojox.gfx still doesn't have the logarithmic axis yet.
Update: One way to do it is to remap data along the logarithmic axis, and use the linear axis with custom labels. For example:
// we will transform our 'x' to a decadic logarithmic scale
var LOG10 = Math.log(10);
var data = [...]; // my data of {x, y}
var transformedData = dojo.map(data, function(value){
return {
x: Math.log(value.x) / LOG10,
y: value.y // 'y' is unchanged
};
});
// ...
// add the axis and the data
chart.addAxis("x", {
natural: true,
includeZero: true,
// our logarithmic labels
labels: [
{value: 0, text: "1"},
{value: 1, text: "10"},
{value: 2, text: "100"},
{value: 3, text: "1000"},
{value: 4, text: "10^4"},
{value: 5, text: "10^5"},
{value: 6, text: "10^6"},
{value: 7, text: "10^7"},
{value: 8, text: "10^8"},
{value: 9, text: "10^9"}
]
});
chart.addSeries("my data", transformedData);
// ...
Something like that will do the trick. The other option is to use labeling function to generate "logarithmic" labels automatically.