thanks. unravel_index do the trick. Travis E. Oliphant wrote: > TG wrote: > > Hi there. > > > > I am working with multi-dimensional arrays and I need to get > > coordinates of the min value in it. > > > > using myarray.argmin() returns the index in the flatten array, which is > > a first step, but I wonder if it is possible to get the coordinates > > directly as an array, rather than calculating them myself by using this > > flat index and the shape of the array. > > > > well, in fact i'm not sure to understand how argmin(myarray) works, > > when myarray is multidimensional. > > > By default, the argmin method flattens the array and returns the flat > index. You can get the corresponding element using > > myarray.flat[index] > > Alternatively, you can use the function unravel_index > > unravel_index(flat_index, myarray.shape) > > to return an N-dimensional index. > > > If you give an axis argument, then the minimum is found along the > specified dimension and you get an N-1 dimensional array of indices that > will all be between 1 and myarray.shape[axis] > > > -Travis
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