Sometimes I need to check bathymetric or topographic data. A good and fast way to do it is to use SURFER. XYZ data need to be gridded first. Click Grid–>Data and open the file. Select… Lire la suite »How to get a 2D/3D view using SURFER
In Excel, the maximum worksheet size is 1048576 rows by 16384 columns. It means that large files, typically gridded files are hard to manipulate. A possible solution is to use SURFER, particularly the worksheet. SURFER… Lire la suite »How to manipulate large sheet files: SURFER !
I often see gridded maps with a supposed resolution of 100m, even 5m in some cases ! Let’s be clear: it’s almost impossible. I will explain why with an example based on gebco bathymetric data.… Lire la suite »Resolution of bathymetric maps