The well known methods in this domain are based on "the level set" algorithms.

i think MATLAB software will useful for you such kind of analysis ?

use Biopac software for EEG data acquisition.

use : http://www.biopac.com/eeg-electroencephalography 

Hi Mohsen

I think one of the best answers is EEGLab toolbox for MATLAB.

sccn.ucsd.edu/eeglab/

Checkout MNE python http://martinos.org/mne/stable/mne-python.html.

EEG LAB toolbox works on Matlab has this feature.

Checkout SCCN

http://sccn.ucsd.edu/wiki/Chapter_03:_Plotting_Channel_Spectra_and_Maps

Can anybody please send me the 'eeglab' software. I am unable to download the software from the site. 

https://sccn.ucsd.edu/wiki/How_to_download_EEGLAB

here it goes..

Thanks Alexander Cerquera

This seems like a much more strait forward function for plotting a topographical map. Rather than downloading an entire toolbox and trying to figure out which functions to use.

https://www.mathworks.com/matlabcentral/fileexchange/3279-eegplot?focused=3785703&tab=function

Probably that link help you http://mne-tools.github.io/mne-python-intro/

Best

Here is a simple MATLAB code for the topographic plot.

http://i-linkz.net/wordpress/index.php/2018/01/05/topographic-plot/

If you have installed BCILAB matlab library, you can use topoplot function as follows.

topoplot(datavector, EEG.chanlocs) ;

datavector should be number_of_channels x 1 vector and EEG.chanloc is a struct which has channel labels, locations, and etc.

You can find a sample EEG data .mat file in Mike X Cohen's web site.

http://mikexcohen.com/lecturelets/sampleEEGdata.mat

Also, you can refer his lecture.

http://mikexcohen.com/lecturelets/indexing/indexing.html

You can find a simple python code for this in the below link:

https://stackoverflow.com/questions/15361143/how-to-fit-result-of-matplotlib-pyplot-contourf-into-circle

Reza Shaemi from your comment i found the solution am looking for days. thanks