my problem is like this: i´ve got a ASCI-file with values for the x-, y- and z-value (in Gauss-Krueger). Now I would liek to use a converting tool from rhe Toolbox to create contour lines from my ASCI-file. If possible I would like them to be in Vector format.
Run the ASCII to Raster GP tool (Conversion toolbox)
If you have Spatial Analyst, run the Contour GP tool to create contours. (SA toolbox - Surface toolset)
What you may discover is that the Contour tool will create stairstep contour lines. To resolve this, run the FocalStats tool with a MEAN Statistics type and a default 3x3 rectangle neighborhood after you run the ASCII to Raster GP tool and then run the Contour GP tool. This will create smoother contour lines.
thanks again for all your commitment. I really appreciate your help. If I may I would like to bother you with one final question: My situation has changed slightly: now I´ve been given a *.xyz-file. If I open it for example with Textpad is shows 4 columns. Teh first one contains the ID, the second one the x-value, the third one the y-value and the last one the z-value. Is the tool 3D Analyst Tool/Convert/From file/3D-ASCII to feature class somehow useful for my purposes or is my search for solving my problem completely misdirected.
The Ascii 3d to Feature creates a point file not a raster, so you will have to then either interpolate the point file or convert directly to a raster with the point to raster tool, to have a raster that contours can be generated on.
The Ascii to 3d Feature should work on your .xyz data. Bear in mind the output selected, if you select the multipoint and then try to evaluate the results created, then the points will be aggregated into sections. Depending on the amount of xyz points, you maybe be better off following the lidar workflows outlined here and create Terrains.