How to remap all negative and positive value in 0 to 1 scale in polar plot?

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Cece Guan
Cece Guan 2016-7-7
编辑： Thorsten 2016-7-7
Hi,
I am wondering how to remap all positive and negative values into 0-1 scale in polar plot?
The values I have look like:
from 0 to 1/2 pi, r=0.5,
from 1/2 pi to pi, r= -0.2
from pi to 2/3 pi, r= -0.3
from 2/3 pi to pi, r=0.1,
without remapping, the negative value will go to the opposite region (i.e. the value -0.2 supposed to be in 1/2 pi to pi region but will map in the opposite region 3/2 pi to pi,
so I want to remap all values, including negative and positive values, into 0-1 scale, so that all value will stay in their assigned region.
Is there any way to do it?
Thanks,
Cece

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Thorsten
Thorsten 2016-7-7
编辑：Thorsten 2016-7-7
r = [0.5 -0.2 -0.3 0.1];
r = r - min(r);
r = r/max(r);

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