Posted by
Michael Schmid on
Aug 02, 2010; 4:37pm
URL: http://imagej.273.s1.nabble.com/Circular-plot-with-ImageJ-tp3687397p3687400.html
Hi everyone,
without wanting to enter a lengthy discussion - it depends on what
you want. Interpolation may be desired in some cases (smoothly
varying pixel values), undesirable in others. ImageJ has an option in
the Profile Plot options for interpolation.
So, if you want interpolation, use the polar transformer, but then it
may make sense to deselect interpolation in the Profile Plot Options
to avoid interpolating pixel values that are already a result of
interpolation.
If you don't want interpolation, use the plugin by Johannes or some
equivalent macro that simply takes the pixel values at the nearest
point.
Michael
________________________________________________________________
On 2 Aug 2010, at 14:24, Johannes Schindelin wrote:
> Hi,
>
> On Mon, 2 Aug 2010, Michael Schmid wrote:
>
>> you can use the Polar Transformer and then do a normal (linear)
>> linescan.
>>
>>
http://rsb.info.nih.gov/ij/plugins/polar-transformer.html>
> Note that you will then analyze interpolated data, not your
> original ones.
> Not wanting to start a flamewar, I nevertheless feel the urge to
> point out
> that not all scientists are happy with analyses that use processed
> data
> when they could have used the original pixel intensities instead.
>
> Ciao,
> Johannes