removing tickmarks on image in MatLab2014a

I have created an image using the following code:

smallmatrix_6partic=[0 1 0 0 0 0 ; 0 0 0 0 0 0 ; 0 1 0 0 0 0 ; 0 1 0 0 0 0; 0 0 0 1 0 0; 0 0 0 0 1 0];

smallmatrix_colheading= {'A','B','C','D','E','F'}; 

[rows,cols]=size(smallmatrix_6partic);

imagesc(smallmatrix_6partic)

set(gca,'Xtick',1:rows,'XTickLabel',smallmatrix_colheading)

set(gca,'Ytick',1:rows,'YTickLabel',smallmatrix_colheading)

Is it possible to remove the little vertical thin black tick marks on X-axis and the little horizontal think black tick marks on Y-axis? Simultaneously, I want to keep the labels ('A', 'B', 'C' etc.) themselves. I tried the following code but this one completely erases the X-labels, too.

set(gca,'xtick',[],'ytick',[])

Answer 1

[Ralf]

Is that doing the Job for you?

set(gca,'TickLength', [0 0])

[Laszlo Bodnar]

Absolutely, yes, perfect! Thank you!