WMS – MAPSERVER

GRAPHICS OUTPUT

After computation of filed of deformation is finished the map application HSMAP (Help Service) for graphical output is used to display computed results together with topographic layers. Application uses WMS to display topography map from server TopoHelp ČR , IDC-ÚHÚLOPRL, DEMIS and NASA (Landsat, MODIS).

It is possible to change scales ,display of point id and include topographic layer like TopoHelp ČR or Landsat etc . Resulting picture can be saved as bmp, gif or jpg,GML, SVG a ESRI Shapefile (SHP) . The field of horizontal displacements on grids and the field on main axes of horizontal deformations on grids within the area is showed. Arrows in deformation field picture indicate the orientation to compression ( blue ) - to the center of cross, or extension ( green ) - outside the center of cross.

It is useful to use topographic layers for work with results - for example contour lines. Displacements may seem to go uphill, which is caused by Helmert transformation used to compute geodetic measurements. But horizontal deformations, represented by principal axes of compression or extension are independent on this and answer to the real situation well.

DISPLAY PARAMETERS BUTTONS

Information