python - Sort numpy array by row and order matching values based on original array -

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I have a 2D number and I want to sort the rows based on the first column values. The problem is that it has been formatted:

I'm sorting by column: 0,1,2,3,4,0,1,2,3,4,0,1,2 , 3, 4, etc. - & gt; You can see that it repeats itself

Actually I want to group 1s, then 2s, then 3s, then 4s. Importance of the order of mailing value: I need to have the first '1' row in the first one, which is displayed without any sort of array, after which there is one etc. I use this command: sortedData = myData [myData [,, 0] .argsort ()]

Unfortunately, it does not appear in the order of matching columns based on the original order of the array is. Are there some options that I can turn on to enable it?

Thank you!

You can change the sorting algorithm being used by the argument .

Use

(An stable sorting algorithm.)

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