Plotting
in [Matlab]
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From: Brian Mitchell on 4 Aug 2010 00:22 I am having difficulty simultaneously plotting various pdf's with a histogram. I believe I am correctly using the hold on function and can get multiple plots. I have tried several different approaches to no avail. The challenge appears to be scaling the functions so that the histogram and related pdf's are visible. For example, how would I scale the results from invoking ksdensity(x). I do not want to rescale the y-axis, from 0 to .08, to 0 to 35, which would only squash the plot. I want to maintain the scale so that the ksdensity(x) follows the same scale as the histogram and normal pdf. I am fairly new to MATLAB, which is no excuse. I have spent a great deal of time reading and searching for an answer to no avail. I woulld appreciate any assistance and/or guidance. I am aware of the histfit function, but still have problems adding another pdf to scale. Brian D. Mitchell
From: neil on 4 Aug 2010 00:37 "Brian Mitchell" <brian.d.mitchell(a)hotmail.com> wrote in message <i3aptc$65f$1(a)fred.mathworks.com>... > I am having difficulty simultaneously plotting various pdf's with a histogram. I believe I am correctly using the hold on function and can get multiple plots. I have tried several different approaches to no avail. > > The challenge appears to be scaling the functions so that the histogram and related pdf's are visible. For example, how would I scale the results from invoking ksdensity(x). I do not want to rescale the y-axis, from 0 to .08, to 0 to 35, which would only squash the plot. I want to maintain the scale so that the ksdensity(x) follows the same scale as the histogram and normal pdf. > > I am fairly new to MATLAB, which is no excuse. I have spent a great deal of time reading and searching for an answer to no avail. I woulld appreciate any assistance and/or guidance. > > I am aware of the histfit function, but still have problems adding another pdf to scale. > > Brian D. Mitchel Well you can either re-scale the output from the ksdensity OR rescale the histogram values by using [n,xout] = hist(...) then using a bar plot to plot the rescale histogram bar(xout,n*scalingFactor)
From: Brian Mitchell on 4 Aug 2010 00:52 "neil " <neil.iain(a)gmail.com> wrote in message <i3aqpf$rc$1(a)fred.mathworks.com>... > "Brian Mitchell" <brian.d.mitchell(a)hotmail.com> wrote in message <i3aptc$65f$1(a)fred.mathworks.com>... > > I am having difficulty simultaneously plotting various pdf's with a histogram. I believe I am correctly using the hold on function and can get multiple plots. I have tried several different approaches to no avail. > > > > The challenge appears to be scaling the functions so that the histogram and related pdf's are visible. For example, how would I scale the results from invoking ksdensity(x). I do not want to rescale the y-axis, from 0 to .08, to 0 to 35, which would only squash the plot. I want to maintain the scale so that the ksdensity(x) follows the same scale as the histogram and normal pdf. > > > > I am fairly new to MATLAB, which is no excuse. I have spent a great deal of time reading and searching for an answer to no avail. I woulld appreciate any assistance and/or guidance. > > > > I am aware of the histfit function, but still have problems adding another pdf to scale. > > > > Brian D. Mitchel > > Well you can either re-scale the output from the ksdensity > OR > rescale the histogram values by using > [n,xout] = hist(...) > then using a bar plot to plot the rescale histogram > bar(xout,n*scalingFactor) Thank you! How do you rescale the output from ksdensity...again not the axis, but the output.
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