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dr-ni · Feb 27, 2021 · 86f87b1 · 86f87b1 · zvezdochiot · Feb 27, 2021
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diff --git a/.gitignore b/.gitignore
@@ -5,3 +5,4 @@
 libsvdm.a
 helmert3d
 helmparms3d
+helmdiff3d
diff --git a/README.md b/README.md
@@ -27,10 +27,10 @@ Seven parameters are required for this kind of transformation
 and can be calculated from a set of at least three point correspondences
 [Crosilla, F. (1999). Procrustes analysis and geodetic sciences. Technical report, Quo
 vadis geodesia...?, Department of Geodesy and GeoInformatics, University of Stuttgart].
-The tool helmparms3d reads two ASCII point-files and calculates all necessary
-parameters for Helmert transformation. All parameters are written to
-an ASCII file for further computations. The Helmert transformation can
-then be calculated with helmert3d.
+The tool helmparms3d reads two point-textfiles and calculates all necessary
+parameters for Helmert transformation. For further computations these parameters are stored in
+an additional textfile. The Helmert transformation can
+then be calculated with helmert3d. Finally the alignment can be tested with helmdiff3d.
 
 ## Development
 
@@ -58,7 +58,11 @@ helmparms3d [xyz_src_infilename] [xyz_dest_infilename] [parms_outfilename]
 
 Transformation:
 ```sh
-helmert3d [xyz_src_infilename] [param_infilename] [xyz_outfilename]
+helmert3d [xyz_src_infilename] [param_infilename] [xyz_transformed_outfilename]
+```
+Test:
+```sh
+helmdiff3d [xyz_dest_infilename] [xyz_transformed_infilename] [xyz_diff_outfilename]
 ```
 
 ## Files

diff --git a/man/man1/helmdiff3d.1 b/man/man1/helmdiff3d.1
@@ -4,7 +4,7 @@
 helmdiff3d
 
 .SH DESCRIPTION
-Diff 3D Helmert transformation Tool
+3D Helmert Diff-Test Tool
 
 .SH SYNOPSIS
 helmdiff3d [xyz_src_infilename] [xyz_dest_infilename] [xyz_diff_outfilename]
@@ -19,7 +19,7 @@ xyz data file format:
  x[n] y[n] z[n]
 
 .SH EXAMPLE
-export EXAMP=/usr/share/doc/helmert3d/examples/
+ export EXAMP=/usr/share/doc/helmert3d/examples/
 
  helmparms3d $EXAMP/testpoints_src.txt $EXAMP/testpoints_dest.txt testparms.txt
  helmert3d $EXAMP/testpoints_src.txt testparms.txt destpoints.txt

diff --git a/man/man1/helmert3d.1 b/man/man1/helmert3d.1
@@ -61,7 +61,8 @@ along with this program; if not, write to the Free Software
 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 
 .SH SEE ALSO
- helmparms3d(1)
+ helmparms3d(1),
+ helmdiff3d(1)
 
 .SH CONTACT
  Website: https://github.com/dr-ni/helmert3d

diff --git a/man/man1/helmparms3d.1 b/man/man1/helmparms3d.1
@@ -4,7 +4,7 @@
 helmparms3d
 
 .SH DESCRIPTION
-Parameter computation tool for 3D Helmert transformation
+3D Helmert transformation parameter computation tool
 
 The 3D Helmert transformation (Xt=T+sRX) is a frequently used method in geodesy to produce transformations between different Cartesian coordinate systems.
 .TP
@@ -88,7 +88,8 @@ LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 
 .SH SEE ALSO
- helmert3d(1)
+ helmert3d(1),
+ helmdiff3d(1)
 
 .SH CONTACT
  Website: https://github.com/dr-ni/helmert3d
diff --git a/src/helmdiff3d.c b/src/helmdiff3d.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011 U. Niethammer,  http://helmparms3d.sourceforge.net/
+/* Copyright (C) 2020 U. Niethammer,  https://github.com/dr-ni/helmert3d
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -63,7 +63,7 @@ int main(int argc, char* argv[])
     int stat=0;
 
     fprintf(stdout,"\n*******************************\n");
-    fprintf(stdout,  "*      helmdiff3d v%s       *\n",VERS);
+    fprintf(stdout,  "*      helmdiff3d v%s      *\n",VERS);
     fprintf(stdout,  "*   (c) U. Niethammer 2020    *\n");
     fprintf(stdout,  "*******************************\n");