I have to load Points, Lines and Polygons shapes, I have some files as Shapefile (standard for Geographic Information Systems - ESRI) and another files simmilar to CAD.
I thought that it would be more useful to load the data in metric coordinates (as Mecartor or another projection) because the units was more convertible to metric not angular (Lat/Lon).
If I have a file as the following (in ASCII, TXT or CSV format)
IDPoint, XCoordPoint, YCoordPoint
1, 450342.25, 7438278.10
2, 530724.27, 7349827.11
25, 127832.21, 7872827.45
These coordinates are in meters from the origin x (greendwich meridiam) and origin y (ecuator paralel)
If i want to load that file that would show all points in the canvas, how can I do to translate or scale the canvas conform I add new points and show in real coordinates if the canvas or picture, form, and so is shown in pixel units?
Thanks for a lot of.
GIS Analyst and Developer