how to get the ceiling and floor values of data in an array?

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Hatim Altarteer
Hatim Altarteer 2021-8-29
回答： Walter Roberson 2021-8-29
i have a file that holds 100x3 values of coordinates. the 3 columns represent the xyz plain.
taking the first row of values in the pCoords file, we have:
[120.639107128470, 0.677434823554889, 76.2799587504780]
i want to make an array that has the values of both ceiling and floor of all the values in the array.
for instance, i want an array which stores the [120,121], [0,1], and [76,77] and rest of the values.
can anyone help me?
thanks!

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回答（1 个）

Walter Roberson
Walter Roberson 2021-8-29
output = permute(cat(3, floor(pCoords), ceil(pCoords)), [1 3 2])
the result will be 100 x 2 x 3 -- so for any given location pCoords(J,K), output(J,:,K) will be the row of two values corresponding to the floor and ceiling. This output arrangement was chosen because you show the output in the form of a row for each value.

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