BillB · Global Mapper User

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BillB
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  • Hello Lee Don't know if this will help with your specific problem, but we have always found it helps to begin with known OS base data.  So I would suggest you go to: https://www.ordnancesurvey.co.uk/opendatadownload/products.html and download the d…
  • Hi bisenberger It is possible to undo single steps in the digitisation process with Ctrl-Z, but entire operations cannot be undone.  If you search the forum for "undo" you will see requests going back over many years for this feature, which is, afte…
  • I don't know anything about the requirements for 3D PDF, but it does sound like GM knows that it needs to be a fairly small number of faces (2048x2048 rather than 23919x21669 - so a factor of more than 10x smaller). Without reducing the area (cropp…
  • Ian, thanks for your suggestion.  The problem is that when using a DSM to generate the viewshed, the obstructions, in the form of trees and buildings, are an integral part of the terrain model that GM is using.  They are not separate vector areas, s…
  • I would just like to support this request.  The 3d view is fine for pretty images, but if you want to do some serious work with it, you have to be able to place the camera/target/FoV, but most importantly, save and restore named views, as with the m…
  • I have always assumed that World Imagery was free to use, including for commercial purposes, but having looked at the ARCGIS site that opens when you right-click on the World Imagery link, it really is not clear.  Can anybody clarify?
  • So how long will it take to get through the other 16,041 tasks? Or have you already started? ;-)
  • Thanks Mark I tried it again with both elipse and rectangle and they definitely align to lat-long grid, not local grid. GM/BM people, could there be an option in the Range Ring dialog to align with Local Grid? It obviously didn't matter where "0…
  • Hi alienyouth, thanks for the suggestion but I can't see how it helps. We want to be able to stay within the same data set (GMW) and call up different layer configurations. The GMP file can act as a record of the layer state at a given time, but th…
  • Thought I had found an answer to this with the Range Ring option "Create bounding rectangle instead of rings" but it appears to create the rectangle on the lat-long axes rather than the local grid. Any way to create the "range-ring" rectangle align…
  • duenodemonte The quote you picked above probably provides the answer you are looking for: "You can even use a PGN with an alpha channel and get translucent fill styles." The filetype is actually PNG (as you suggest) and the correct term is …
  • Hi folks the XML file no longer appears to work. Attempting to a "Add sources from file" in the Data Sources dialog, results in an error box: global Mapper v16.2.2 (b061915) ! Unable to add any sources from file. Can this be fixed? It wa…
  • Hmmm, uncompressed BMP? The most space-hungry graphic file format out there? An average JPG of a similar scene could easily be one-tenth the size of a BMP, with no visible difference. Perhaps it is imposed on you by an (old?) code library, but co…
  • Does this get you started?
  • Thanks Jeff I'm not familiar with the Adobe 3D PDF viewer approach. Sketchup has great 3d camera handling, similar in a way to Google Earth's pegman. Drop a 'little man' on the ground (can snap to a point) then can pan on that point, zoom etc. …
    in Gm16 Comment by BillB August 2014
  • Just my two-penneth. The 3d view can be a very useful way of looking at topographical and other 3d data, but at present it only offers a form of overview, due to non-precise camera positioning. It would be particularly helpful to be able to locate…
    in Gm16 Comment by BillB August 2014
  • Chris, apologies because I don't know anything about your project or its setting, but just a point of view from a landscape architect who has an interest in view sheds - I think you may be expecting too much of them. They are all models and have …
  • Hi Macsmith Can't answer your query about creating features from pixels of same colour, but you could save yourself a lot of trouble by downloading OS VectorMap data, which includes woodlands - probably the same areas as shown on Streetview. Goo…
  • Hmmm, as an iPad owner, this is some interest, but I can't see quite how it would be useful. I can't imagine trying to do the stuff currently done on PC in something like an IOS environment. If I wanted to view GM output on an iPad (or Android) I w…
  • Absolutely marvellous Thanks Mike 2013-08-20_08-29-19.jpg
  • Hi Mike, regarding this latter suggestion of cropping the terrain, it seemed like a good idea until we tried it and found that, if the view shed would have been visible to an area of zero height beyond the terrain, it is still calculated and display…
  • Hi Francesca Another good (possibly simpler) option, is to export as Raster, choose type GeoTiff. With this format, you can specify an output scale and DPI in the export dilaog. We then drag the resulting TIFF into CorelDraw and it imports at t…
  • Hi Kent, thanks for your suggestions - couldn't read the attachments but get the description, thank you. Unless I am misunderstanding, creating a grid doesn't quite do the job, because the grid is created below right of the anchor point. There is …
  • Hi Mike, thanks for the response. Sorry to be picky, but specifying a corner + width x height is not quite the same thing. I know where the centre of my site is. I'm trying to avoid calculating corner coordinates by being able to define width and…
  • So once you have got the other 11501 out the way, we should be good to go? That's fantastic news Thanks Mike, I look forward to seeing what you come up with. Bill
  • Just want to add, if anybody else comes this way, right click and set Options to 'Only snap to Point Features ('P')' - then the snapping doesn't get confused with lines you have just drawn or grid overlays - very clean and fast.
  • OK, just created and exported 32 sets of Viewpoint name, coordinates, distance and bearing in well under 10 minutes - that'll do me :-) Thanks Bill
  • Hi Mike, I don't actually want to create the lines, but if that's the best way to create attributes to extract to the list, then so be it. What you have suggested (draw lines between points, export lines as ASCII with attributes) is really good e…
  • OK thanks. So whether I want to add a hill or dig out a lake in an existing terrain, if the modification is a lower layer in the Control centre, it will determine the output terrain. Thanks Mike.
  • Mike, will the levels of the more detailed layer take precedence over those of the less detailed layer, irrespective of which is higher or lower?