Posted by
Michael Schmid on
URL: http://imagej.273.s1.nabble.com/get-3-max-and-min-values-tp3692913p3692915.html
Hi Dani,
There are two ways:
(1) Get the histogram and analyze it. For float images, the accuracy
will be limited, however.
(2) The "destructive way", with higher accuracy for float images:
First make a copy of your image to work with.
Use getStatistics to get the maximum. Then use the new
process>Math>Macro command to eliminate the pixel(s) with value=maximum:
run("Macro...", " code=[if(v>="+myMax+") v="+minValue+";]");
where myMax is the maximum from the statistics (beware of rounding
error in float numbers converted to a string, so set it to a slightly
lower value).
minValue=0 for integer images, and -1.79E308 for float images.
Again, repeat for 2nd-highest values (now the previous maximum is not
a highest value any more), etc.
Michael
________________________________________________________________
On 15 Apr 2009, at 19:48, danibodor wrote:
> I know that you can get the max and min of a selection with the
> getMinAndMax function (or getStatistics). Is there a way to get
> e.g. the 3 maximum or minimum values. I was searching for a
> function to list all the values in a selection, and then sorting
> those and getting X maximal or minimal values. However, I cannot
> find a way of listing all the values in my selection. Also, I don't
> know if it possible to then easily sort them to get the highest
> values.
>
> Can anyone help me?
>
> Thanks!