Extract spatial data using shp file as a mask

I'm new in matlab

So I tried to extract pixel data from a modis bands image with point as a central for 5x5 box.

So the 5x5 box will be filled with modis image's pixel.

I already did it in qgis, but it failed.

The yellow dot contains lattitude, longitude and target data.

Is there any refrence to do this? I already read some examples, but they are only using the box (shp file) to fill it.

For future works, I want to generate 4D data [n,x,y,t]

n = for band's modis image

x,y = box

t = data target

[yanqi liu]

yes，sir，which is the image process target？ get the yellow point location？

[Image Analyst]

What is qgis, and did you do it there? Or did it fail there?

What/where exactly is "the box"? Is it the rectangular region where the 4 yellow dots define the corners?

I'm not sure what n is. Is this image not gray scale but maybe multispectral with several wavelength bands?

I don't know what t (the "data target") is. Is it the gray level?

I don't know what the 4-D data would be. So, let's say n=1, x=2, y=55, and t = 163. What would the value at your output array output(1, 2, 55, 163) represent? What goes into that location of the 4-D array?

[Fadhurrahman]

1. so modis has 7 bands. so the 'n' will be filled n=1,2,3...7.

i want to extract pixel data on image with 5x5 box with yellow dot as a refrence. so x,y will be filled x=5 y=5

the 't' data comes from yellow dot, let's just say t=163.

so the output array will be (1,5,5,163), with 5x5 has a pixel data in it.

2. this image is a wavelenght bands.

3. "the box" in this image is just an illustration for 5x5 box that i want to do it in matlab.

4. qgis is a software for geospatial analysis. just like arcgis but its a free version. i already tried in qgis but it fails

@Image Analyst

[Walter Roberson]

Depending on the details of your situation, the code at https://www.mathworks.com/matlabcentral/answers/1608670-how-to-process-nc-file-in-matlab#comment_1890080 might help.

[Fadhurrahman]

thank you so much @Walter Roberson i'll be sure to try it out

[Fadhurrahman]

@yanqi liu so the yellow dot is the point where i want to put 3x3 box to extract pixel modis data