Hello Jorge, Wednesday, June 05, 2002, 2:35:20 PM, you wrote:
JE> thanks for the replies, but i think i have been misunderstood. JE> i dont want to merely display the image, i need to have the image JE> georeferenced using control points. if i know that the corners of the image JE> lie in certain x/y locations, how can i register this image so that if i JE> overlay polygon data over they will show in the appropriate position. Stet 1) Create create TAB file for your image manually. TAB file ========================= format for iamges is: !table !version 300 !charset WindowsCyrillic Definition Table File "arrow2.bmp" Type "RASTER" (0,0) (0,0) Label "Pt 1", (10,0) (1024,0) Label "Pt 2", (10,10) (1024,1024) Label "Pt 3" (0,10) (0,1024) Label "Pt 4" CoordSys Earth Projection 1, 0 Units "degree" =================================== Where in Label clause first pair of ccords is coords in units defined in Units clause (in this case) - degree. Second pair of coords - coords of points of your image. Lets image is 1024x1024. You need put values in degree for each of corner in pixels. Step 2) Open it as simple TAB using "Open Table" statement JE> I also need to know if it is possible to create a dialog in mapbasic to JE> control the act/deact, addition/remove layers. i know i could use radio JE> buttons or checkboxes, but i need the dialog to be dynamic. what if i create JE> 4 radio buttons and the user opens another layer. see? then the dialog JE> would be outdated, and be recreated. is this possible? JE> It would also be better if i could change the order of layers from within, i JE> dont want the user to deal with mapinfos layer control. JE> thank you guys. Yes, you can't create dialog controls dynamic. But you can use two ListBoxes: Availible and Visible Layers. Also add to dialog two (or four) buttons Addd, Remove (Add All, Remove All). To learn how to implement interaction between ListBoxes you can see Sample Code from MBBuilder Installation. Run MBBuilder and open project: "c:\Program Files\microOLAP\MBBuilder 1.5.1\SAMPLES\Dual ListBox Demo\DualListBox.MBP" -- Best regards, Vladimir Lashin microOLAP Technologies LLC MBX/VCL free stuff - http://www.microolap.com/gis/mbx/index.htm MBBuilder - Visual Development Tool for MapBasic - http://www.microolap.com/gis/mb.htm Raster Handler for ERDAS Imagine to MapInfo - http://www.microolap.com/gis/imgrhl.htm MapInfo Callbacks Manager ActiveX - http://www.microolap.com/gis/micm.htm mailto:[EMAIL PROTECTED] http://www.microolap.com/gis/ - GIS related products --------------------------------------------------------------------- List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
