hi, i know this should not be sent to this forum... but i got no reply from liblas-devel... i thought maybe you could at least point me the good forum, where i could get some reply to this problem, thanks a lot!!! riki
-----Original Message----- From: Riki Tiki <[email protected]> To: [email protected] Date: Tue, 23 Feb 2010 22:21:37 +0300 Subject: [Liblas-devel] about las2txt and las2tin > Hi, > > I have used above two tools. Thanks a lot for those in advance. > I did the following: > 1) las2txt -i a.las -o coordinates.txt -parse xyz > 2) las2tin -i a.las -o triangles.txt > > My questions are as follows: > 1) Do all the points in coordinates.txt should be appearing in triangles.txt? > I.e. for example if in coordinates.txt I have the following: > x0 y0 z0 > x1 y1 z1 > x2 y2 z2 > ... > x100 y100 z100 > > Where x0,y0,z0,...,z100 are floats. So I assume that in triangles.txt I will > only see numbers > between 0 and 100 inclusive. Am I right on this? Also can I be 100% sure > that all the numbers > between 0 and 100 will appear in triangles.txt at least in one triangle? > > 2) For example currently I have downloaded the following > "http://liblas.org/samples/mscst000131.las"; las file... I converted it using > your tools above into coordinates.txt and triangles.txt, respectively as it > is shown exactly above. > > But then I run a program which consists of the following code: > > //program written in c# > string[] triangles = File.ReadAllLines("triangles.txt"); > string[] coordinates = File.ReadAllLines("coordinates.txt"); > long counter; > > for(long i=0; i<coordinates.Length; i++) > { > counter = 0; > for(long j=0; j<triangles.Length; j++) > { > string[] str = triangles[j].Trim().Split(' '); > > if((long.Parse(str[0]==i))||((long.Parse(str[1]==i))||((long.Parse(str[2]==i))) > { > counter++; > } > } > Console.WriteLine("Line: "+i+", found "+counter+"times."); > } > > Some of the lines are found to be 0 times. It means that not all of the > coordinates appear in tins created? Am I doing something wrong? Or is it > normal that some of them do not appear in tins generated? > > Thanks a lot in advance! > Riki > > > _______________________________________________ > Liblas-devel mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/liblas-devel > _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
