you need show the pixels values in command window or view the image as a figure?.

For both cases, if the image variable is IM you need.

In Command Windows:

IM(row,col)

If you want to show your image in a figure.

figure, imshow(IM,[range of pixels values])

more imformation http://www.mathworks.com/help/images/functionlist.html you can see the image processing toolbox of matlab. 

if i am wrong in my answer, please can you explain better your problem.

Regard

Imagesc(Data2d,[scale_min,scale_max]) command. 

You can use colours:

surf(X_mat,Y_mat,Z_mat, C)

% C = values for each point (colours)

You can simply run a loop in which you can transfer each index no. to your predetermined size of array. 

simple for loop can do this.

imresize can be another option

Thank you

check this:

https://stackoverflow.com/questions/3942892/how-do-i-visualize-a-matrix-with-colors-and-values-displayed