Under review

column chart limit line

10 years ago • updated by 10 years ago • 2

I'm trying to figure out how to create a frequency spectrum chart. I've got the column series bit down but I need to have a limit line in each column (like the image here: http://www.pas-products.com/bilder/24-Octave-Spectrum-Analyzer.gif).

I've tried using stacked column series but I cannot style the column so that I only see the top line. I've also tried StepSeries but they seem to start in the middle of the column instead of the left hand side.

Any ideas?

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10 years ago

I've figured out a way of doing this but it's not nice:

I have 4 stacked ColumnSeries:
1 for the value.
1 for the gap between the value and the limit (with fill set to transparent).
1 for the limit (the value is always 1 to produce a line).
1 for the overflow

Then I just do a bit of logic like follows:

for(int i=0; i<data.Length; i++){
if(data[i].Value > data[i].Limit){
//set each column value accordingly
}else{
//set each column value accordingly
}
}

Under review

10 years ago

I think it would be better to implement this as a new series type! I am not sure if it is general enough for the core library, but it would be an interesting example in the example library!

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