http://imagej.273.s1.nabble.com/minimum-distance-between-objects-tp3688186p3688188.html
> Hi,
>
> assuming that with point objects, you refer to a PointRoi, copy the
> following BeanShell-snippet into either the Fiji Beanshell Interpreter
> or save it with the file-ending .bsh and drag it to the Fiji toolbar.
>
>
> import ij.*;
> import ij.gui.*;
>
> points = IJ.getImage().getRoi();
> pointsX = points.getXCoordinates();
> pointsY = points.getYCoordinates();
> for ( i = 0; i < pointsX.length; ++i ) {
> dMin = Integer.MAX_VALUE;
> iMin = -1;
> for ( j = 0; j < pointsX.length; ++j ) {
> if ( i == j ) continue;
> dX = pointsX[ j ] - pointsX[ i ];
> dY = pointsY[ j ] - pointsY[ i ];
> d = dX * dX + dY * dY;
> if ( dMin > d ) {
> dMin = d;
> iMin = j;
> }
> }
> IJ.log( ( i + 1 ) + " " + ( iMin + 1 ) + " " + Math.sqrt( dMin ) );
> }
>
> It prints n lines with three space separated numbers into the log
> window:
>
> <index> <nearest point index> <minimal distance>
>
> Best regards,
> Stephan
>
>
>
>
>
> On Tue, 2010-05-25 at 14:54 +0200, Johannes-Paul M. Koch wrote:
>> Dear Listers,
>>
>> I have two images with a set of point objects (derived from a previous
>> calculation, i.e. basically, centers of mass of various particles).
>>
>> I want now to calculate the distance of each point (object) in image A
>> to
>> the closest point (object) in image B (and only to this closest one...).
>>
>> I suppose, the code I am looking for should 1) calculate ALL distances
>> from point 1 in image A to ALL points in image B, 2) identify the
>> shortest
>> and 3) return the value of that distance.
>>
>> I had a look at Ben's plugin
>> (
http://imagejdocu.tudor.lu/doku.php?id=plugin:analysis:minimum_separation_distance:start)
>> However, this does sort of a different job. On top, I admit that I am
>> not
>> so familiar with java (thanks, Wayne, for the macro language!), so it is
>> not so easy for me to extract the necessary information out of this
>> plugin.
>>
>> Is there anything already available (plugin, macro) that does this job,
>> or
>> at least comes close such that I can build upon it? Or do I have to look
>> more closely at Ben's plugin (maybe someone could point out what I would
>> have to look at!)?
>>
>>
>> Many thanks,
>> Johannes
>
>