InPolygon data selection from a data file

Question

amberly hadden 2015-5-15

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/216911-inpolygon-data-selection-from-a-data-file

编辑： Walter Roberson 2015-5-15

采纳的回答： amberly hadden

在 MATLAB Online 中打开

Hi

I have following data

Lat  Lon  Reading
56  1
58  2
59  3
57  4
54  5
51  6
52  7
50  8

now I want to select data which lies in specific lat lon range, lets say lat = 21-25 and lon = 50-54

in polygon function is only allowing me set two points

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Answer 1

amberly hadden 2015-5-15

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/216911-inpolygon-data-selection-from-a-data-file#answer_179242

编辑：Walter Roberson 2015-5-15

在 MATLAB Online 中打开

numbers = xlsread('test.xls');
lats = numbers(:, 1);
lons = numbers(:, 2);
z = numbers(:, 3);
lat1 = 58.4
lon1 = 26.1
z1 = 1.65
lat2 = 58.5
lon2 = 27
z2 = 1.11
desiredLats = lats >= lat1 & lats <= lat2
desiredLons = lons > lon1 & lons <= lon2
desiredZs = z <= z1  & z >= z2
rowsToExtract = desiredLats & desiredLons & desiredZs
extractedRows = numbers(rowsToExtract, :)