DK - GPS support
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Q10321 -  How do I use the DK to convert (project) and plot, on a real-time basis, point coordinates generated from a GPS device (which are defined in latitude/longitude) to my other data layers in the viewer which are in the Mercator projection? I will be using VB or VB.NET. With VB: Set prj_list = New XGIS_ ... (Modified: 2007-04-03)

Q10627 -  Does the DK support the connection of a GPS device using the USB port, or only via the serial port? TatukGIS supports the standard NMEA GPS interface protocol, which specifies only RS-232 serial communication via the serial port. The USB standard does no does not include a GPS device as part of the ... (Modified: 2005-04-19)

Q10527 -  Does the DK support the uploading of waypoints to my GPS device? What about the presentation of my GPS points as a map layer on my PC? The DK can be used to create and export map data, such as waypoints, to the GPX format. There are a number of readily available free software programs which can be ... (Modified: 2007-03-02)

Q10373 -  Can points (such as to indicate, for instance, telephone pole locations) be input and manipulated in a DK based application with the coordinates coming from a GPS device (not in real time but in post-processed) from topographic data collectors, and from with the keyboard? Yes. For example: shp : lay ... (Modified: 2003-11-21)

Q10219 -  Is it possible with the DK to rotate all of the layers in the Viewer by some user-specified angle? Users sometimes refer to this as "rotating the map" In particular, this can be useful with GPS tracking applications. Yes, this is supported as of the DK 8 release. Please refer to the DK Rotation samp ... (Modified: 2006-09-25)

Q10382 -  Does the DK allow for the use of animation layers - e.g. a map layer on which you can place objects (points) which can be moved around under program control with no screen refreshes? I am thinking of, for example, a GPS vehicle tracking system involving a large numbers of vehicles. Yes, certainly. ... (Modified: 2004-12-17)

Q10424 -  There seems to be too many 'OnLayerPaint' calls in our DK application. For example, if I resize the window, I get 2 calls to 'OnLayerPaint' when there should only be one. If I just click on the map (the view displaying the XGIS_ViewerWnd) I get a single call to 'OnLayerPaint' when there should not ... (Modified: 2003-11-21)

Q10539 -  Please explain what the CachedPaint mode does. What are the advantages/disadvantages? The advantage of the use of CachedPaint mode is that it can result in improved rendering performance, particularly by eliminating the screen flicker, with very large data sets involving the presentation of many lab ... (Modified: 2006-10-18)

Q10344 -  Can a linear feature be created and edited with points collected with a GPS unit? Yes. Step one - create a line: shp : layer.CreateShape( gisShapeTypeArc ) ; my_uid : shp.Uid ; shp.Lock(1) ; shp.Reset ; shp.AddPoint(my_point_1 ) ; shp.AddPoint(my_point_2 ) ; shp.AddPoint(my_point_3 ) ; . shp.Unlock ... (Modified: 2003-11-21)

Q10248 -  How I can use the DK to convert a vector layer containing points that were collected from a GPS device so that they properly fit my shape vector map layer, which is on the Transverse Mercator projection? The DK may be used to project an unprojected map layer (such as one containing points collected ... (Modified: 2005-12-09)

Q10304 -  My precision surface mining/dredging application requires that I plot out up to ten possible GPS "destination" coordinates that make up part of a grid in a field, and then indicate where the active GPS says that the moving machine is in comparison to the destination coordinates. Can this be done wit ... (Modified: 2003-11-21)

Q10661 -  I compiled DK code into the DLL but the GPS support stops working? This is a known issue with the Borland TThred.Synchronize method. The solution is to add to your code: http:codecentral.borland.com/Item.aspx? id=21148 ... (Modified: 2005-12-20)