We Keep Coding

Dynamically added Highcharts series with min and max

I currently have a Highcharts chart that has several tabs that allow the user to show various data on the graph/chart. So I am dynamically adding series for each of those data points. This all works great.
However, I would like to set the min and max (instead of Highcharts just automatically determining the min and max) for the yAxis for two of those data points, so that when comparing their data on the graph they line up with each other. However, I can't seem to find a way to set the min and max of the yAxis for the added series.
Below is what I have currently:
window["chart"].addAxis({
id: 'Data',
title: {
text: 'Graph',
enabled: true
},
lineWidth: 0,
lineColor: '#000000'
});
window["chart"].addSeries({
data: groupingData,
name: 'Graph',
type: 'line',
color: '#000000',
yAxis: 'Data'
});
How would I force the certain min and max for yAxis when dynamically adding this series?

You can use setExtrimes() for this:
https://api.highcharts.com/highcharts/xAxis.events.setExtremes
https://api.highcharts.com/highcharts/yAxis.events.setExtremes
chart.yAxis[0].setExtremes();

If anyone else is looking for the answer, I found out that you can just set min and max when addAxis is called:
window["chart"].addAxis({
id: 'Data',
title: {
text: 'Graph',
enabled: true
},
lineWidth: 0,
lineColor: '#000000',
min: minNumber,
max: maxNumber
)}

Group Categories in columnrange highcharts with custom view

I am using highcharts with angular 4.
I want to create a chart to show the result something like this:
Where:
GHRM and HR Scanner are application name.
We are showing some data groupwise (application wise here)
To achieve the above result I have tried using columnrange chart type in highcharts.
But the result of above link differs from my requirement. As you can see the result of above link:
Can any one help me to know how I can customize the categories view in this case to achieve the result as shown in first screen shot.

Getting that kind of look with grouped categories plugin would be a rather a hard task to accomplish.
Another approach is using a separate x axis for each set of categories (GHRM and HR Scanner in your case).
Axes can be positioned via left & top properties and sized via height properties. These options are not documented yet but they work. They accept relative values in percents (e.g. 30%) and absolute values in pixels (e.g. 200px).
xAxis: [{
categories: ['Category 1'],
tickWidth: 0,
height: '30%',
offset: 0,
title: {
text: 'First x axis',
rotation: 0,
align: 'high'
}
}, {
categories: ['Category 2', 'Category 3'],
tickWidth: 0,
height: '60%',
top: '40%',
offset: 0,
title: {
align: 'high',
text: 'Second x axis',
rotation: 0
}
}],
plotOptions: {
series: {
grouping: false,
groupPadding: 0,
pointPadding: 0,
borderWidth: 0
}
},
series: [{
data: [
[1, 7]
],
}, {
data: [
[2, 4],
[3, 8]
],
xAxis: 1
}]
Live demo: http://jsfiddle.net/BlackLabel/s3k3s944/
grouping has to be disabled so that columns are always centered. pointPadding, groupPadding and borederWidth force columns to occupy maximum vertical range.
All other options of axes configuration can be found in the Highcharts API: https://api.highcharts.com/highcharts/

How to stop Flot Charts from re-ordering my data?

I am using a line chart. I feed the data the following:
var scheduled = [[51,1700],[52, 1750],[1,1600],[2,1675]];
var actual = [[51,1320],[52, 1550],[1,1575],[2,1600]];
In the above the first number of each set is the week of the year and I am trying to show the last 4 months of data.
However, when the chart is drawn Flot charts re-sorts the data by the first value (lowest to highest) which creates all kinds of issues. Instead of 4 columns in the series there are now 52, and the lines are quite out of whack.
I don't see anything in the documentation that says this is supposed to happen, nor do I see anything that says I can prevent it. However, for the data to be meaningful, the data must not be re-ordered.
Is there a setting I'm unaware of that can stop this behavior?
Edit : Adding plot code
var plot = $.plot('#scheduled-actual-flot-line', [
{
label: 'Scheduled Hours',
data: scheduled,
lines: { show: true, lineWidth: 2, fill: true, fillColor: { colors: [{ opacity: 0.5 }, { opacity: 0.5 }] } },
points: { show: true, radius: 4 }
},
{
label: 'Actual Hours',
data: actual,
lines: { show: true, lineWidth: 2, fill: true, fillColor: { colors: [{ opacity: 0.5 }, { opacity: 0.5 }] } },
points: { show: true, radius: 4 }
}],
{
series: {
lines: { show: true },
points: { show: true },
shadowSize: 0 // Drawing is faster without shadows
},
colors: ['#afd2f0', '#177bbb'],
legend: {
show: true,
position: 'nw',
margin: [15, 0]
},
grid: {
borderWidth: 0,
hoverable: true,
clickable: true
},
yaxis: { ticks: 4, tickColor: '#eeeeee' },
xaxis: { ticks: 12, tickColor: '#ffffff' }
}
);

Flot takes the x values as numbers and displays / sorts them accordingly. If you don't want that, you can use the category mode (see this example and this fiddle with your data).
xaxis: {
//ticks: 12,
tickColor: '#ffffff',
mode: 'categories'
}
PS: 12 ticks are not possibly with your data, as there are only 4 datapoints defined.
That flot reads all data as numbers by default is described here in the documentation.

Flotr examples use a for loop to create random data, so the first index will always be sequential.
[[51,1700],[52, 1750],[1,1600],[2,1675]];
Your arrays show that flotr must be doing a sort on the array before painting the data sets as lines, bar-graphs or whatever.
I can only suggest you create a timestamp from the months and there's a time setting you can in flotr settings to format the dates as you want.
The other way is replace your anomalous data (months) with sequential indices:
var arr = [[51,1700],[52, 1750],[1,1600],[2,1675]];
for(var i=0; i<arr.length; i++) arr[1][0] = i;

Flot is doing exactly what it should do for a line chart (or any type of x-y graph). It's showing the last two points of your dataset on the left because 1 and 2 are indeed less than 51 and 52. I'm guessing that you're trying to show data that crosses a year boundary. You need to make the first two weeks of the second year later than the last two of the first. You could use actual dates instead of week numbers, in which case Flot would handle it fine. That would also give you more flexibility in labeling the x-axis. But as a quick fix, just add 52 to the second year's data, e.g.:
var scheduled = [[51,1700],[52, 1750],[53,1600],[54,1675]];
var actual = [[51,1320],[52, 1550],[53,1575],[54,1600]];

Dates on xaxis with highcharts

I need to have dates on my xaxis on my chart. I collect my data through a range datepicker where the user can enter a range of 14 days. I need the first value on the xaxis to be the start date of the range and the last value to be the end date of the range.
i want the the xaxis labels to read something like "27th Jan 2015" , "28th Jan 2015" or something in that direction and each tic to be 1 day. I've read the API-documentation and i've played around alot with the settings of the chart but for some reason i can not get it to work.
$('#graphColumn').highcharts({
title: {
text: '',
x: -20 //center
},
xAxis: {
categories: [dayArray[0], dayArray[1], dayArray[2], dayArray[3], dayArray[4], dayArray[5], dayArray[6], dayArray[7], dayArray[8], dayArray[9], dayArray[10], dayArray[11], dayArray[12], dayArray[13]]
},
yAxis: {
title: {
text: ''
},
plotLines: [{
value: 0,
width: 1,
color: '#808080'
}]
},
tooltip: {
valueSuffix: ''
},
legend: {
layout: 'vertical',
align: 'right',
verticalAlign: 'middle',
borderWidth: 0
},
credits: {
enabled: false
},
series: [{
showInLegend: false,
name: ' ',
data: series,
color: '#77B7C5',
marker: {
symbol: 'circle'
}
}, {
showInLegend: false,
name: '1 år sedan',
data: series1yearago,
color: "#71C73E",
marker: {
symbol: 'circle'
}
}]
});
here is my chart. I know the xaxis has categories set now but thats only for the moment, i know it should be datetime. My series are regular int arrays with one number on each index. I would apreciate any help that could be given here!
Edit: Here is a working jsfiddle example: http://jsfiddle.net/g0p00tLv/1

Your data, and how it is formatted, is what we really need to see.
You need to do one of two things:
1) pass your data as an array of [x,y] pairs, where x is either the epoch time stamp (in miliseconds), or a date.UTC object
2) pass your data as a single array of y values, and use the pointStart and pointInterval properties to set the date axis properly.
reference:
http://api.highcharts.com/highcharts#plotOptions.series.pointStart
http://api.highcharts.com/highcharts#plotOptions.series.pointInterval
If you need more info, set up a working fiddle example and post it here.

Plotting x and y axis in a JavaScript generated chart with Flot library?

I'm using flot library and I found from the docs that I can send a json object with any option I can right at the charting call.
So let's say I call:
$.plot($("#placeholder"), [ [] ], { yaxis: { show: true, max: 100, min: -100 }, xaxis: { show: true, max: 100, min: -100} });
However this is what I get as result (with a non empty data argument):
But I don't want vertical lines marked at every axis tick, but two lines corresponding to the axis.
I don't want ending with the x=0 and y=0 plots. I would even have to obtains points arrays for it. How can I do this with flot or is there any recommended library to plot x,y points series with not much thrills.

To get lines on the axes, add this to your options object:
grid: { markings: [{ xaxis: { from: 0.0, to: 0.0 }, color: 'black', lineWidth: 1 },
{ yaxis: { from: 0.0, to: 0.0 }, color: 'black', lineWidth: 1 }] };
If the other lines are still present after adding this, please provide a more complete example (e.g. a fiddle).