Histogram plotting

[amol]

Hi Steema Support,

I have a problem in plotting data in histogram plot.
Currently i have plotted it with dummy data as shown in image.

histogram

histogram.jpg (321.45 KiB) Viewed 18840 times

But when i look data in chart and try to understand its plotting according to X and Y scale then plotting looks different with respect to data.
Means i am unable to understand how plotting is done on the data points those are not present in X,Y data list.

Please help me to understand the logic used behind the plotting of histogram.

Regards,
PlanoResearch

[Christopher]

Hello,

The Histogram series is optimized to draw series with equi-distant X values. Where data has disparate X values it is better to use an Area series with Stairs, e.g.

Code: Select all

		private void InitializeChart()
		{
			double[] xvalues = new double[] { 827, 837, 897, 929, 968, 1009, 1014, 1017, 1026, 1027, 1044, 1066, 1088, 1110, 1113, 1115, 1148, 1196, 1207, 1213, 1297, 1300, 1334, 1343, 1365 };
			double[] yvalues = new double[] { 2, 1, 0, 3, 14, 5, 4, 17, 18, 20, 13, 15, 16, 21, 19, 6, 12, 11, 7, 22, 8, 10, 23, 34, 9 };

			if(xvalues.Length == yvalues.Length)
			{
				Area series = new Area(tChart1.Chart);
				series.Stairs = true;
				series.Add(xvalues, yvalues);
			}
		}

TeeChartPro.vshost_2018-06-07_15-34-20.png (25.35 KiB) Viewed 18837 times

[amol]

Hi Christopher,

You are right, but my need is that i have to filter data(means remove unwanted data) using histogram.
I am also little bit confused how i achieve this.

If you have any suggestion on this we will appreciate.

Regards,
PlanoResearch

[Christopher]

You are right, but my need is that i have to filter data(means remove unwanted data) using histogram.
I am also little bit confused how i achieve this.

Why can't you filter data using the Area series?

[amol]

Hi Christopher,

Actually my need is to plot data using Histogram.
I have also gone through with excel charts here i have plotted my data. i m attaching images of same. On excel my data plotted correctly. i want to plot similar in teechart.

first image

img1.jpg (103.1 KiB) Viewed 18826 times

As shown in first image data is plotted on histogram chart with 3 bins.

second image

img2.jpg (104.41 KiB) Viewed 18825 times

As shown in second image i have changed number of bins to 5. And after changing number of pillar/bars increased.

third image

image3.jpg (332.93 KiB) Viewed 18824 times

But in third image i have plotted same data with teechart but it plots data differently. why?
One more thing in teechart histogram, there is no property to set bins number. And my need is to change bins dynamically over the plotted data.

Kindly help i want to plot similar chart using teechart as plotted in excel.

Regards,
PlanoResearch

[Christopher]

But in third image i have plotted same data with teechart but it plots data differently. why?
One more thing in teechart histogram, there is no property to set bins number. And my need is to change bins dynamically over the plotted data.

Kindly help i want to plot similar chart using teechart as plotted in excel.

Please bear in mind that, as a business, we cannot dedicate very much time to helping you write your applications without receiving payment for it. So any help you can give us whereby we can spend less time helping your write your applications is greatly appreciated. TeeChart was not specifically designed to replicate Excel functionality nor has it ever been sold as doing so, and as such we do not feel obliged to spend time, without payment, producing code which replicates Excel.

In this particular case, then, could you please spend some time making an attempt to produce the functionality you need so that we can run this code here to save us the time of writing it ourselves. As a guide you may like to consider Stackoverflow's directives for a Minimal, Complete, and Verifiable (MCVE) example you can read about here. Once in receipt of the MCVE you have written for us we can then help you in achieving your final goals.

Thank you.

[amol]

Hi Steema Support,

As you suggested i am attaching demo for your help. Please find it from attachment.
We are using teechart version 2012.

CustomSubSchart.rar

demo

(55.26 KiB) Downloaded 1291 times

regards,
Planoresearch

[Christopher]

As you suggested i am attaching demo for your help. Please find it from attachment.
We are using teechart version 2012.

That you are using version 2012 means that it is six years since you have paid Steema for an upgrade. If all our clients did not pay for upgrades Steema would soon be out of business!

I have run your test project, but as far as I can see it does not reproduce a problem with TChart here. Neither does the project give any indication of your requirements, nor has any effort been made to produce a project which clearly shows where your problem is.