How to find coordinates?

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Hi,
I have a MapPoint List that has X and Y coordinates. I would like to find in that list, the smallest X and Y, the highest Y and the smallest X, the highest X and Y and then the smallest Y and the highest X (I need to get corner points). Does anyone know how to sort List so that I have it so sorted? I know how to make it depend only on X or Y.

What I have tried:

C#

ReadOnlyPointCollection pts = linieStrany.Points;
                      var mapPointList = pts.ToList();
                      var serazenySeznam=mapPointList.OrderByDescending(o => o.X).ToList();

Don't know how to do it? Maybe it's done in a completely different way...

Thank you

David

Posted 6-Jun-22 0:51am

dejf111

Updated 6-Jun-22 0:56am

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OriginalGriff · Accepted Answer · 2022-06-06T00:56:00

Solution 1

Look at the Max and Min methods:
Enumerable.Max Method (System.Linq) | Microsoft Docs[^]
Enumerable.Min Method (System.Linq) | Microsoft Docs[^]

If you want the corner points that enclose all points, then all you need are min x, min y, max x, and max y: the two corners (minX, minY) and (maxX, maxY) enclose all points.

Posted 6-Jun-22 0:56am

OriginalGriff

Updated 6-Jun-22 0:57am

v2

Comments

dejf111 6-Jun-22 7:38am

Thank you

OriginalGriff 6-Jun-22 7:45am

You're welcome!