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From: Barbara on 4 Jul 2010 13:59
Hi,
Is there a way to create semilog-boxplots? i have for x discrete frequencies from 1 to 1000000, and some measured values for each frequency.#

thanks Brezi
From: Wayne King on 4 Jul 2010 19:54
"Barbara" <brezendrache(a)web.de> wrote in message <i0qi5a$7rm$1(a)fred.mathworks.com>...
> Hi,
> Is there a way to create semilog-boxplots? i have for x discrete frequencies from 1 to 1000000, and some measured values for each frequency.#
>
> thanks Brezi

Hi Brezi, Why don't you just take the log of the data and then do a boxplot of that? For example, imagine you have a number of complex-valued measurements at a particular frequency.

Z= randn(100,1)+1j*randn(100,1)+10+1j*10;
% now represent the data in dB
Z = 20*log10(abs(Z));
boxplot(Z);

Now the y-axis is in dB.

Wayne
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