Templot Club Archive 2007-2020
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posted: 5 Sep 2008 15:22 from: JimH
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Hi, I'm in the process of designing a new layout based on Wolverhampton Low Level (assuming that this remained open and actually High Level was closed). I have large scale OS maps of the area at 1:2500 which I want to use as the background for the track layout. My problem is the scaled size of the background after importing it into Templot is incorrect. I scan it at a specific resolution (1200 dpi) and then save as a .bmp within the shapes folder within Templot. However, even after importing it and going through the dialogue box setting the correct resolution and 2500 in the scale box, the actual background image appears to be less than half the anticipated size? I entered the correct dimensions in Templot (twice) and still seem to be having the problem? Could anybody point me in the right direction please? |
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posted: 5 Sep 2008 15:34 from: Martin Wynne
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Hi Jim, Welcome to Templot Club.  Did you set your required gauge and scale first? regards, Martin. |
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posted: 5 Sep 2008 16:00 from: JimH
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Hi Martin, Thanks for the welcome. I set my gauge as S4/P4 according to the instruction in an earlier post. The B7 turnout template is about double the size of the "real" turnout on the scan itself. Regards, Jim |
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posted: 5 Sep 2008 16:11 from: JimH
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Hi, Solved it! Even though I set my scanner utility to scan at 1200dpi when it exports to my picture editor (Microsoft Office Picture Manager) it actually saves it at 150.01 dpi!!  So I've got the scale right now, but obviously at 150dpi the image is poor so off to try and get it at a higher resolution now. Kind regards, Jim |
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posted: 5 Sep 2008 16:27 from: Martin Wynne
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JimH wrote: I set my gauge as S4/P4 according to the instruction in an earlier post.Hi Jim, Scanner specs often give misleading dpi figures after fancy software manipulation of the data. The actual hardware resolution of the scanning head is likely to be much lower. I suspect that the quoted 1200dpi figure is actually 600dpi. If you look in the small print at the back of the scanner manual you can probably find this information. 1200dpi sounds very high, unless you have an expensive high-end scanner. Try setting 600dpi instead. You can use tools > ruler > show ruler to measure between known features on the map. ALT+left click sets one end of the ruler, ALT+right click sets the other end. Check the distance shown on the ruler in 4mm scale against the same distance scaled off the map. (If you set the grid units to proto-feet, the ruler will read in prototype feet for easy comparison with the map.) Or if you send me the bmp file I might be able to dig around in it and get the exact dpi. There is a Templot video showing how to set up a scanned image in a picture shape: picture shape -- display a scanned track plan as a background guide 39MB (broadband only) edit: we seem to have crossed posts, but both on the same track! regards, Martin. |
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| Last edited on 5 Sep 2008 16:30 by Martin Wynne |
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posted: 5 Sep 2008 16:50 from: JimH
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Thanks Martin, Yes I think you are right - I have quite a good UMAX SCSI scanner but I used a cheap Canon USB for this scan (my SCSI card doesnt fit with my new PC). The attached version is JPEG - I couldn't attach as the original .bmp format? Still I think the track layout is going to be challenging with all those curved formation on the approach to the station from the tunnel  I was wondering if it's best to lay the plain tracks in first and then insert the necessary crossovers and turnouts, or if I should "build from the middle" as it were?, Regards Jim |
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posted: 15 Sep 2008 17:38 from: JimH
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Hello All, I'm beginning to get the hang of things now - lots of trial and error and reading the excellent tutorials. One question now that I've resolved the background scan issues is do I have to load the background shape each and every time I start Templot, or is there a way to save it with the template files? Looking to the rest of the plan, it looks like I'm going to need some irregular diamonds in my scheme, but I'm a fair way off being at that stage in development so far. Kind regards, Jim |
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posted: 15 Sep 2008 17:52 from: Martin Wynne
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JimH wrote: One question now that I've resolved the background scan issues is do I have to load the background shape each and every time I start Templot, or is there a way to save it with the template files?Hi Jim, Background shapes are saved in a .bgs file independently of the track templates in a .box file. That makes it easy to create different track plans on the same baseboard / railway room outlines. For picture shapes, if you put the scanned .bmp image file in the same folder as the .bgs file, usually C:\TEMPLOT\SHAPE-FILES\ , the image will be loaded automatically into the picture shape when you load the .bgs file. regards, Martin. |
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posted: 15 Sep 2008 19:21 from: JimH
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Thanks for the fast reply Martin. I'll do as you suggest. Kind regards, Jim |
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