how to multiply one number with matrix

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Tanmoyee Bhattacharya
评论： Image Analyst 2017-9-3
I have a matrix of size 3*4*4*9862
3=lat
4=lon
4=pressure
9862=number of days
I want to multiply 9.80665 with the values of this matrix if I multiply it like
k=matrix
k1=k*9.80665
or any other way

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回答（1 个）

KSSV
KSSV 2017-9-3
Let k be your 4 dimensional matrix. Use
k1=9.80665*k;
  2 个评论
Tanmoyee Bhattacharya
Tanmoyee Bhattacharya 2017-9-3
编辑：Tanmoyee Bhattacharya 2017-9-3
If this formula is applicable for 9862 days?Or only for one day?
Image Analyst
Image Analyst 2017-9-3
It multiples every single value (element) in the whole matrix by that number. If you want to multiply only some days, then you'll have to index those. Like to multiply only elements with day indexes between 1000 and 2000, do this
k1 = 9.80665 * matrix(:, :, :, 1000:2000);

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