Removing selected data using unique
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Halo every one,
I have a question baout how to remov selected data base on such parameter. I want to remove the parameter of colom 1 and colom to based on colom 2 and colom 3.
The reuirement is the coloum 1 will be removed if the colom 3 has values coloum 3 <3.0 and column 3>-3.0. The same parameyers also be implemented for clumn 2 based on column 4<3.0 and column 4>-3.0.
Is there any one can help me how to use unique coding to do remove in column 1 and column 2.
Thx
1 个评论
Star Strider
2019-4-27
There will be nothing left in the file:
D = load('InpUniqueSandSoil.txt');
[L,H] = bounds(D)
producing:
L =
0.2000 0.3476 -1.9411 -1.4528
H =
47.0000 29.5447 2.6284 2.9843
采纳的回答
Image Analyst
2019-4-27
编辑:Image Analyst
2019-4-28
Try
data = dlmread(filename, ' ');
col1 = data(:, 1);
col2 = data(:, 2);
col3 = data(:, 3);
col4 = data(:, 4);
% coloum 1 will be removed if the colom 3 has values coloum 3 <3.0 and column 3>-3.0.
rowsToDelete = col3 > -3 | col3 < 3;
col1(rowsToDelete) = []; % Method 1: set to null.
% clumn 2 based on column 4<3.0 and column 4>-3.0.
rowsToKeep = col4 <= -3 & col4 >= 3;
col2 = col2(rowsToKeep); % Method 2: extract only the ones you want.
12 个评论
Image Analyst
2019-4-29
I really doubt I'll be able to find enough time to carve out of my very busy schedule to delve into this. It doesn't look like a simple 5 minute task. Sorry but good luck. Call Mathworks tech support and they may be able to help.
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