Problem plotting with bar() instead of hist()

Hi,

I use this code to overlay a CDf plot on a histogram. Note the histogram data in binned according to bin centers.

bin = 110:10:220;
[y2,x2] = ecdf(y);
[y1,x1] = hist(y,bin);
plotyy(x1,y1,x2,y2,@(x,y)bar(x,y,1,'c'),'stairs')

However, I need to bin the data using bin edges instead. I have tried using the histc function but cannot get the plot to display. You have to use the bar function in order to plot the histc data, but the bar function can only have 1 output argument. Could anybody help me out with the correct syntax for the plotyy fucntion now that I'm using the bar() instead of hist()?

Thank you

bin = 110:10:250;
histc(data,bin);
binneddata = ans / length(data) 
[y2,x2] = ecdf(data);
[y1,x1] = bar(binneddata);
plotyy(x1,y1,x2,y2,@(x,y)bar(x,y,1,'c'),'stairs')

[Walter Roberson]

Why would you want bar() to have multiple outputs?

[John]

I don't, I'm just not sure what the output should be for bar(), I tried the code below but it is incorrect.

[y2,x2] = ecdf(data);
[y1] = bar(binneddata);
plotyy(x1,y1,y2,@(x,y)bar(x,y,1,'c'),'stairs')

Thanks

[John]

Hello Walter,

If you have minute would be in a position to advise me on the correct syntax for the plot function above?

Thank you

Answer 1

[Walter Roberson]

bin = 110:10:250;
binneddata = histc(data,bin) ./ length(data);
[y2,x2] = ecdf(data);
plotyy(bin, binneddata, x2, y2, @(x,y)bar(x,y,1,'c'), 'stairs')

[John]

Thank you for your help.