In my highchart, at some point, I need to update min, max and tickInterval of a yAxis.
I tried 3 ways:
I tried the following code, but it says "object# has no menthod 'update'"
var extremes = chart.yAxis[i].getExtremes();
chart.yAxis[i].update({
min: extremes.dataMin * 1.1,
max: extremes.dataMax * 1.1,
tickInterval : SomeValue,
});
Also I tried chart.redraw as well... using the following code
chart.yAxis[i].min = extremes.dataMin * 1.1;
chart.yAxis[i].max = extremes.dataMax * 1.1;
chart.yAxis[i].tickInterval = SomeValue;
chart.redraw();
This time it does not show any error, but the chart does not refreshed as well.
This time,I tried to update the options and then to create a new highchart:
options.yAxis[i].min = extremes.dataMin * 1.1;
options.yAxis[i].max = extremes.dataMax * 1.1;
options.yAxis[i].tickInterval = SomeValue;
chart = new Highcharts.Chart(options);
It works this time, but I dont want to create a new highchart, I want to update the old one, because I am using it in one another method too.
Please let me know, how this can work, and also if I create new highchart using the 3rd way, then is there a way to get the latest 'chart' variable in another method?
Thank you
See this highcharts API:
setExtremes (Number min, Number max, [Boolean redraw], [Mixed animation])
Link: http://api.highcharts.com/highcharts#Axis.setExtremes()
They also have some jsfiddle examples there.
EDIT: to change the tickinterval try following:
chart.yAxis[0].options.tickInterval = markInterval;
Add this too after the above line:
chart.xAxis[0].isDirty = true;
you should use other object to trigger yAxis's update method.
exp:
var chart = new Highcharts(config);
var axes = chart.axes; // this is all Axis object
var xAxis = axes[0]; // by array's method get axis object
var yAxis = axes[1];
// now, object is ok, next trigger update method
yAxis.update(<your attribute config>);
highcharts versions by: "4.1.9"
You have only one option:
$(container).highcharts({
xAxis: {
max: 10 //you can set the maximum here
}
})
The maximum value can be defined only once. After that, any other changes have no effect to the chart.
chart.xAxis[0].options.max = 12; //this statement has no effect
Add below lines before setting chart.addSeries
chart.options.series = false;
chart = new Highcharts.Chart(chart.options);
chart.render();
Related
I have a requirement where i have to show custom points on x-axis instead of dates values. Also same custom data points needs to be shown on navigator as well. In the below Js fiddle, i am converting data (Per13/2016 etc) into equivalent date values and then binding the chart using converted date values.
Below is the link of the JS fiddle:- Fiddle link
In the Js fiddle, i am showing Per1,Per2 etc.on x-axis and same has to be shown on navigator as well.
Now i am facing problem with the navigator,when i changes the range using slider ,the x-axis labels changes but not according to the range selected.Also tool-tip formatting is getting changed.
Can you please let me know how to handle this scenario and best way to do the same.
//few code lines to post fiddle link
xAxis: {
labels: {
formatter: function () {
if(fiscal13){
var perDate = new Date(this.value);
return 'Per' + (perDate.getMonth() + 1);
}
}
}
}
I am not sure if I am right, but I think you are overdoing this.
Let's keep original data, so remove fiscal13Data.Data.forEach(function(item) { .. }); function. And When creating data, use simply index of the point as x-value:
var cost = [],
usage = [],
dataLength = fiscal13Data.Data.length
i = 0;
for (i; i < dataLength; i += 1) {
// need to sum costs
cost.push([
i, // the index
fiscal13Data.Data[i]['Cost'] // cost
]);
usage.push([
i, // the index
fiscal13Data.Data[i]['Usage'] // Usage
]);
}
Now you can get to the "Per13/2016" strings in a simple way in xAxis labels' formatters:
var str = fiscal13Data.Data[this.value].Date;
In tooltip formatter, it is almost exactly the same:
var str = fiscal13Data.Data[this.x].Date;
And here is working demo: http://jsfiddle.net/qneuh4Ld/3/
Note: You data looks a bit strange - don't you want to sort it first? Also, you have twice every date (e.g. "Per13/2016" - once for "water" and once for "electric").
I have a dynamic data series like this
[1,0],[2,0],[3,0],[4,0],[5,0],[6,2],[7,5],[8,6],[9,6],[10,6],[11,7],[12,8],[13,8],[14,9]
The data grows automatically, so later on, an extra data point will be added e.g. [15,13]
I have an input field in which the user can select how many points from the end he wants to show.
For example if he inputs 5, only [10,6],[11,7],[12,8],[13,8],[14,9] should be visible. But when the additional point is added, this should become [11,7],[12,8],[13,8],[14,9],[15,13] automatically.
I think I have to use chart.xAxis[0].setExtremes() but I don't know what to enter as parameters... ?
You will have to "reapply" setExtremes when adding a point. The setExtremes function takes in these parameters (API):
setExtremes (Number min, Number max, [Boolean redraw], [Mixed animation])
You would have to use min and max to show the desired number of points, and have that include the last one. For example, you could do something like this:
var chart = $('#container').highcharts();
var numberOfPointsToShow = 5;
// Add new random point
chart.series[0].addPoint(Math.random() * 25);
// Get index of last point
var lastPoint = chart.series[0].data.length - 1;
// Set extremes to go from "min" (based on last point) to last point
chart.xAxis[0].setExtremes(
lastPoint - (numberOfPointsToShow - 1), // min
lastPoint); // max
See this JSFiddle example with dynamic adding of points.
I'm currently working on a graph, which should visualise a fixed time frame. I want to have the start and end of the timeframe fixed on the width of the graph and want to set a custom amount of ticks in between, depending on the timeframe.
I tried to find something in the highcharts docu, but it seems there is nothing for gwt as "tickpositioner" or "tickpositions" for javascript would do.
Has anybody an idea how to approach a solution in gwt to achieve this behaviour please?
I found a solution where i set the tickpositioner in the JSONObject and implement the function in javascript. Mind the "positions.info" because due to the tickpositioner function, label predefined label formatting gets lost.
void setXaxisTicks(XAxis xAxis, Long start, Long end) {
JSONObject options = xAxis.getOptions();
options.put("tickPositioner", null);
configureXAxis(options.getJavaScriptObject(), start, end);
}
private native void configureXAxis(JavaScriptObject javaScriptObject, Number start, Number end) /*-{
javaScriptObject.tickPositioner = function () {
var positions = [],
tick = Math.floor(start),
increment = Math.ceil((end - start));
for (tick; tick - increment <= end; tick += increment) {
positions.push(tick);
}
tLen = positions.length;
positions.info = {
unitName: "minute",
higherRanks: {},
totalRange: positions[tLen - 1] - positions[0]
};
return positions;
};
}-*/;
I have a chart with multiple series for which I have a button that resets the yAxis to a specific amount. I would like to set this specific amount to be the 85th percentile of the yAxis values. Is there a way to calculate this?
jsfiddle example: http://jsfiddle.net/inadcod/TynwP/
Very strange that you wish to do this on the client, you could very easily sort and get the value of the 85th percentile on the server where you are actually sending the data from and use it as a max value for the y axis.
Anyway, you can access the data values using the series.points object array, this contains all the points for the given series, it has many properties of which point.y seems to be of your interest. Loop through all these and store them in another array for convenience and sort this new array. take the length of the array and multiple by the factor you wish to (0.85) and this is the index of the element a.k.a. 85th percentile. Set the min of the given yAxis using this value
var yData = [];
$.each(chart.series[0].points, function() {
yData.push(this.y);
});
var sortedY = sort(yData);
var eightyFifthPercentile = sortedY[Math.floor(sortedY.length * 0.85)];
alert(eightyFifthPercentile);
http://jsfiddle.net/jugal/HkS2Y/
You can do it this way:
var yAxis = chart.yAxis[0];
var extremes = yAxis.getExtremes();
yAxis.setExtremes(extremes.min, extremes.dataMax * 0.85);
See demo here: http://jsfiddle.net/gyavJ/
I'm seeing some odd behavior in a Highcharts line chart. I have multiple series displayed, and need to let the user change what's called the "Map level" on the chart, which is a straight line across all time periods. Assuming that the correct series is
chart.series[i]
and that the new level that I want it set to is stored in var newMapLevel,
I'm changing that series' data like so:
data = chart.series[i].data;
for(j=0; j<data.length; j++){
data[j].y = newMapLevel;
}
chart.series[i].setData(data);
Calling this function has the desired effect UNLESS the new map level y_value is ONE greater than the highest y_value of all other series, in which case the y-axis scale blows up. In other words, if the y_axis scale is normally from 0 to 275,000, and the highest y_value of any of the other series is, say, 224,000, setting the new map level value to 224,001 causes the y_axis scale to become 0 to 27500M. Yes, that's 27.5 billion.
Might this be a bug in Highcharts? Or is there a better way to change the data in a series?
I've posted a fiddle: http://jsfiddle.net/earachefl/4FuNE/4/
I got my answer from the Highcharts forum:
http://highslide.com/forum/viewtopic.php?f=9&t=13594&p=59888#p59888
This doesn't work as smoothly as I'd like. When you go from 8 as your line to 2 as your line, the scale doesn't adjust back down until you enter another value. Perhaps it's a start in the right direction.
$(document).ready(function(){
$('#clickme').click(function(){
var newMapLevel = $('#newMAP').val();
if(newMapLevel){
for(i=0; i<chart.series.length; i++){
if(chart.series[i].name == 'Map Level'){
data = chart.series[i].data;
for(j=0; j<data.length; j++){
data[j].y = newMapLevel;
}
// get the extremes
var extremes = chart.yAxis[0].getExtremes();
//alert("dataMin: " + extremes.dataMin);
//alert("dataMax: " + extremes.dataMax);
// define a max YAxis value to use when setting the extremes
var myYMax = extremes.dataMax;
if (newMapLevel >= myYMax) {
myYMax = Number(newMapLevel) + 1; // number conversion required
}
if (myYMax > chart.yAxis[0].max) {
alert('cabbbie');
myYMax = chart.yAxis[0].max + 1;
}
//alert("myYMax: " + myYMax);
chart.yAxis[0].setExtremes(extremes.dataMin, myYMax)
// finally, set the line data
chart.series[i].setData(data);
}
}
}
}); });