Transform an array into a raster

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YEMY 2021-3-8

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评论： YEMY 2021-3-8

Hello,

I have a 182x121 array (csv file) that I want to transform into a jpg raster with a cell size of 30x30.

The file doesn't have any reference system so I have no Lat,Lon coordinates.

My array' cells are presenting percentages, if there is a way to put such a threshold to make only above 0.7 cells to appear in the raster, otherwise it is not a problem.

Best regards,

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Jan 2021-3-8

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Did you import the csv file already? Thenthe input is not a cvs file, but a matrix. I cannot guess, how you want to reduce the 128x121 matrix to 30x30 elements. What is a "jpg raster cell"? What does "array cells present percentages" mean? What are "0.7 cells"? Can you give an example?

YEMY 2021-3-8

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Thank you for your reply.

it's not about moving from 182x121 matrix or array (as I have them both) to 30x30.

In the image below, there is an example of how my matrix is about, I want to transform it to a raster, and each record should get a cell size of 30x30 , if it not possible to get it with such a cell size, I want just a method to get a raster and then I can resize it.

The matrix presents a the probability of presence of an object, all what you see are probabilities, I want to know if I can put a threshold to mask the ones that are below 70% from the final raster (this is optional).

Jan 2021-3-8

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编辑：Jan 2021-3-8

Please explain, what a "raster" is. What do you mean by "cell size 30x30"? cell(30, 30)?

YEMY 2021-3-8

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编辑：YEMY 2021-3-8

Raster is an image. the cell size that I meant is the pixel size, but it won't work as the image data that I have is not projected, so you can forget about it. So to summit up, I need that matrix to be transformed into an image, and each record in the matrix has to be transformed into a pixel