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Re: Pair correlation function on ImageJ

Posted by Herbie on Jul 15, 2015; 3:54pm
URL: http://imagej.273.s1.nabble.com/Pair-correlation-function-on-ImageJ-tp5013569p5013575.html

Dear Richard,

the poster Xiao is not very clear, or at least I don't know what "packed
particles" are.

If "pair correlation function of a certain 2D area" means pixel-pair
correlation in that area, I'm pretty sure that this spatial statistic is
identical to the auto-correlation function of the image in this area.

Best

Herbie

::::::::::::::::::::::::::::::::::::::::::
Am 15.07.15 um 17:38 schrieb Richard Mort:

> I think in this context Xiao is looking for the spatial statistic. I'm
> not aware of an IJ plugin to do this at the moment but it is on my to do
> list as its a very useful method. The quickest approach would be to
> segment your images and then use analyze particles to get the XY
> positions of each object. Save as .csv and then import this data into R
> and use the spatstat package:
>
> http://www.inside-r.org/packages/cran/spatstat/docs/pcf
>
> Best
> R
>
> On 15/07/15 16:16, Herbie wrote:
>> Xiao,
>>
>> it's always a good idea to first consult the user guide...
>>
>> You may have a look at page
>>
>> <http://rsb.info.nih.gov/ij/docs/guide/146-29.html#toc-Subsection-29.10>
>>
>> Subsection " 29.10.7 FD Math… "
>>
>> If you use Image1 = Image2, i.e. the same image, then you get the
>> auto-correlation function and I guess this is what you want.
>>
>> HTH
>>
>> Herbie
>>
>> ::::::::::::::::::::::::::::::::::::::::
>> Am 15.07.15 um 15:29 schrieb Xiao Zhong:
>>> Hi everyone,
>>>
>>> I am Ph.D. candidate and am working on a project concerning colloidal
>>> particle packing. I am new to ImageJ and I was wondering if anyone knows
>>> how to use it to calculate pair correlation function of a certain 2D
>>> area
>>> with packed particles.
>>>
>>> Thanks!
>>>
>>> Best,
>>> Xiao
>>>
>>> --
>>> ImageJ mailing list: http://imagej.nih.gov/ij/list.html
>>>
>>
>> --
>> ImageJ mailing list: http://imagej.nih.gov/ij/list.html
>

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