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Back to WinCan VX DDMS User Guide
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Introduction
Given that we have WinCan VX at our fingertips for handling all of our data and WinCan Map VX as a connected and/or standalone GIS application, we should where possible take full advantage of the features in WinCan Map to help keep the data organised and make life simple for the site teams doing the inspections.
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Working with Background Tiles
Background tiles (or Ordnance Survey MasterMap layers) are extremely useful for showing just the general geometry and layout of the road and the surrounding areas, and they can usually be relied on quite comfortably for a reasonable level of accuracy.
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Mark the fix for the areas by colour and include in the legend.
Keep clicking Apply and Ok OK and close the Layer Properties panel until you see that the shapefile layer has a load of random colours applied and a legend in the Layers Panel describing which colour is which object type.
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You should now have something like this, although most likely not the same colurs colours as here because Map selects them randomly:
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The random colours selected by Wincan WinCan Map VX.
Finally, re-open the Layer Properties and work through each of the theme part down the left-hand side and assign a colour of your choice to each layer until you have a nice colour scheme.
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Note – you may see that your data and point objects in Map have disappeared. This is because you have added the background layer as an external layer, and when you add new layers to WinCan Map, they are always added at the top of the layers list.
Because this layer is made of shapes filled with colour, you have effectively thrown a blanket over the other layers in your project.
To fix this, right-click on the layers and use the Layer Up, Layer Down, Layer Top and Layer Bottom options to rearrange them. They will always be rendered on the screen in the order from top to bottom that they are listed in the Layers Panel. It’s a good idea to always put the background layer at the bottom of the pile.
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Creating a Scheme Extents Layer
It is common in contract negotiations for clients to issue a marked up drawing to contractors showing the section of road and the extents of the work to be carried out, usually accompanied by some comments regarding which parts of the network need to be inspected, as described the in the section Introduction to Introduction to DDMS Surveying.
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In order to do this, we are going to need a good quality background file as described in section Working with Background Tiles on this page. Here is what the area looks like:
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Now we can zoom in much closer and use the ‘Edit Shape’ button in the Tools ribbon to fine tune the shape of the polygon so that it fits nicely with your scheme extents. In this example, the final step would be to delete the 2 circles because they are no longer needed, and save the ScemeScheme_Extents shapefile in the standard default project file location and with the theme file in the same directory, so that the site teams can load it easily and quickly.
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A user-friendly scheme extents file.
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Marker Posts
Marker posts are the red and white posts that we see commonly along the sides of motorways with some text on.
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What you do from here is up to you. You can now use this info to create a scheme extents polygon layer as described in the previous section, or you can export the selected points to a new shapefile with only these points included, or you can simply use some of the other menu options in the ‘Select’ dropdown drop-down list items to ‘Invert Selection’, and then ‘Hide Selection’ which will result in only your selected items being visible on screen, like this:
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