missing data in surface plot

i should surf plot my data points x(14000),y(26),z(26x14000) , none of these points have missing data, but when i do the surf plot and view it using view(0,90) i could see missing data(white patches) which is never expected because my colorscale is parula which ranges from blue to yellow

[Walter Roberson]

Can you attach the values in a .mat ?

[rupa battula]

my appologies, i cant post my work anywhere but x ranges from(0 to 0.5), y ranges from 488 to 4200, z ranges from (0.0089 to 1.061e-23) all the type double.

[Walter Roberson]

Please show the output of whos for all of the variables.

[KSSV]

If you cant post your work, you ashould not ask for help in open forums. You will get help on showing your problem; else how do you expect to get a help?

[rupa battula]

i have attached the file

Answer 1

[Siyuan Wu]

i just happened to find my figure I plotted last month, which is ok. And after one month, I rerun the program the white spot came up.

I found that it is due to the OpenGL related......

I try to type "opengl hardware" and re-plot the figure. The white spot disappear........

[darova]

Sometimes have problems with colorbar

opengl software         % helps me

Answer 2

[KSSV]

Your data is fine.....there are no missing values....you may try this:

surf(x,y,Z)  
colorbar
grid off 
shading interp

[Walter Roberson]

I do not see any problem on my system.

I would tend to suggest (personal preference)

surf(x, y, Z, 'edgecolor', 'none')
colorbar

I would leave grid on.

You might be having a graphics driver glitch. Try

set(gcf, 'Renderer', 'Painters')

and look at the date of the driver that shows up in

opengl info

and update graphics drivers if you are not fairly current.

[rupa battula]

Thanks, it is working fine

[Walter Roberson]

What was the solution?