click here for a list of all existing Templot documentation
Important Privacy Information cookie information pre-print options:    

click image to open Templot Club in a new tab
Templot club top logo
looking for Templot? - (free)



 you are not logged in  - Login | Join


receive all messages by email: info


Recent Topics
Front Page  Search  Image Gallery  Gallery Upload  My Account  Members  Open Source  TemplotMEC  Help  
make a donation  
please click: important information for new members and first-time visitors Templot Companion - User Guide
            messages archive on Yahoo
page trail:  Templot Club > Forums > Baffled beginners > Importing and scaling background plan
Templot web site

                 Importing and scaling background plan
     
 Start new topic   Reply blank   Printer friendly 
  Rate this topic  
AuthorMessage
 Clicked a link? Wrong message? Wait until the page has finished loading, click in the address bar and then press the Enter key. This is a timing bug in some browsers.
1st message | this message only posted: 18 Mar 2019 00:09
 PM  Reply with quote  Reply blank 
from:
Mike Wilks
MIDDLETON CHENEY, United Kingdom

 

view images in gallery
view images as slides
Hi. Suspect this is covered somewhere but cannot find it. I have a scan of a hand drawn trackplan that represents 16 real feet. The scan is appx 25cm long when printed. It is a .jpg file. Therefore I assume that the scale is appx 20:1.
I can import it but cannot work out how to tell templot what the scale is - at the moment I have a length of O gauge plain track the same size as the scan.....



__________
message ref: 26831
Attachment: o gauge plan 3.jpg (Downloaded 29 times)
 
 Clicked a link? Wrong message? Wait until the page has finished loading, click in the address bar and then press the Enter key. This is a timing bug in some browsers.
2nd message | this message only posted: 18 Mar 2019 00:39
 PM  Reply with quote  Reply blank 
from:
Rob Manchester
Manchester



view images in gallery
view images as slides
Hi Mike,

Assuming you have set the track gauge you are using first and then imported the plan into Templot you may have something like this :-



Using the background shapes dialogue seen above you can shift and resize the image by mouse action until the size of the plan matches the original using the trackpad measurements as a guide.

Rob


__________
message ref: 26832

 
 Clicked a link? Wrong message? Wait until the page has finished loading, click in the address bar and then press the Enter key. This is a timing bug in some browsers.
3rd message | this message only posted: 18 Mar 2019 03:39
 PM  Reply with quote  Reply blank 
from:
Martin Wynne
West Of The Severn, United Kingdom



view images in gallery
view images as slides

Please do not send requests for help direct to me via email or PM.

Post your questions on the forum where everyone can see them and add helpful replies.
Mike Wilks wrote: Hi. Suspect this is covered somewhere but cannot find it. I have a scan of a hand drawn trackplan that represents 16 real feet. The scan is appx 25cm long when printed. It is a .jpg file. Therefore I assume that the scale is appx 20:1.
I can import it but cannot work out how to tell templot what the scale is - at the moment I have a length of O gauge plain track the same size as the scan.....
Hi Mike,

Thanks for attaching your plan, and for putting the 1ft scale marks on it, because that makes it easy.

The size of the plan in cm when printed is irrelevant because that depends on your printer settings and the software which you use to print it.

The information needed for Templot is the size of the image in pixels (dots).

However, your scan included a lot of empty white space which would slow down the screen response in Templot. So I have rotated it for a better fit on the screen, and cropped it down to 3000 x 1000 dots, like this:



I then used a screen pixel ruler to measure the distance between the 16ft marks, and the answer is 2702 dots.

If you don't have a pixel ruler, you can get a free one from:

 http://www.spadixbd.com/freetools/jruler.htm

(Alternatively, you could use the crop/combine function to crop the image in Templot to the 16ft marks and then read the number of dots shown below the background shapes list.)

We now have enough information to calculate the model size of the full 3000 x 1000 image:

1.  16ft = 4876.8mm

2.  So the image scale is 4876.8 / 2702 = 1.8049 model mm per dot. And then:

3.  The width of the image is 3000 dots x 1.8049 mm/dot = 5414.7mm.

4.  The height of the image is 1000 dots x 1.8049 mm/dot = 1804.9mm.

These figures can now be used to set the size of the picture shape. Click the modify shape tab and then the change dimensions... button:



and enter the calculated dimensions:



The picture shape will then be scaled to the model size, ready for the track plan to be designed over it, and you might want to shift it slightly to check that the Templot grid (set to feet) matches your drawn scale marks:



The cropped image file is attached below, and then I will post the BGS file so you can use it without going through the above stuff yourself if you prefer.

cheers,

Martin.

__________
message ref: 26833
Attachment: mike_scan_3000x1000.jpg (Downloaded 21 times)
 
 Clicked a link? Wrong message? Wait until the page has finished loading, click in the address bar and then press the Enter key. This is a timing bug in some browsers.
4th message | this message only posted: 18 Mar 2019 03:44
 PM  Reply with quote  Reply blank 
from:
Martin Wynne
West Of The Severn, United Kingdom



view images in gallery
view images as slides

Please do not send requests for help direct to me via email or PM.

Post your questions on the forum where everyone can see them and add helpful replies.
Here now is the BGS file. Save this and the SK81 file to follow both in the same folder, and then load the BGS file in the Templot background shapes.

Martin.

__________
message ref: 26834
Attachment: mike_scan.bgs (Downloaded 20 times)
 
 Clicked a link? Wrong message? Wait until the page has finished loading, click in the address bar and then press the Enter key. This is a timing bug in some browsers.
5th message | this message only posted: 18 Mar 2019 03:45
 PM  Reply with quote  Reply blank 
from:
Martin Wynne
West Of The Severn, United Kingdom



view images in gallery
view images as slides

Please do not send requests for help direct to me via email or PM.

Post your questions on the forum where everyone can see them and add helpful replies.
Here is the SK81 file.

Martin.

__________
message ref: 26835
Attachment: mike_scan.sk81 (Downloaded 19 times)
 
 Clicked a link? Wrong message? Wait until the page has finished loading, click in the address bar and then press the Enter key. This is a timing bug in some browsers.
6th message | this message only posted: 18 Mar 2019 09:45
 PM  Reply with quote  Reply blank 
from:
Mike Wilks
MIDDLETON CHENEY, United Kingdom

 

view images in gallery
view images as slides
Martin, thank you very much - I cannot pretend to completely follow everything you have done and written but I now have the working drawing to move forward with. Thanks again.

Mike
__________
message ref: 26836

 
 Clicked a link? Wrong message? Wait until the page has finished loading, click in the address bar and then press the Enter key. This is a timing bug in some browsers.
7th message | this message only posted: 21 Apr 2019 12:21
 PM  Reply with quote  Reply blank 
from:
philchudley
 

 

view images in gallery
view images as slides
Is this only method to scale a scanned image?

I have an image scanned from a book and I know the scale and the dpi, there used to be a dialog that prompted you for these values and Templot resized the image for you.

Is this still available, and if so where?

All the best

Phil
__________
message ref: 26988

 
 Clicked a link? Wrong message? Wait until the page has finished loading, click in the address bar and then press the Enter key. This is a timing bug in some browsers.
8th message | this message only posted: 21 Apr 2019 13:30
 PM  Reply with quote  Reply blank 
from:
Martin Wynne
West Of The Severn, United Kingdom



view images in gallery
view images as slides

Please do not send requests for help direct to me via email or PM.

Post your questions on the forum where everyone can see them and add helpful replies.
philchudley wrote: I have an image scanned from a book and I know the scale and the dpi, there used to be a dialog that prompted you for these values and Templot resized the image for you.

Is this still available, and if so where?
Hi Phil,

Yes, it's still available. Load the picture shape first, select it in the list, then click the auto-fit... button:



I had to implement other methods because so few folks seemed to know what DPI they were scanning at (despite the fact that it is normally clearly shown on the scanning dialog, or at least on all the ones I have used).

Plus many picture shapes needing scaling are georeferenced maps, where the scale is taken from the zoom level and the Latitude. That calculation is available directly if needed at help > calculate size of a map screenshot on the background shapes menus above.

cheers,

Martin.

__________
message ref: 26989

 
 Clicked a link? Wrong message? Wait until the page has finished loading, click in the address bar and then press the Enter key. This is a timing bug in some browsers.
9th message | this message only posted: 21 Apr 2019 17:07
 PM  Reply with quote  Reply blank 
from:
philchudley
 

 

view images in gallery
view images as slides
Many thanks Martin, go it now.

All the best]

Phil
__________
message ref: 26990

 
This is topic ID = 3396     Page created at 07:13 (local time)  
You can type a quick reply to this topic here.

Click in the box to begin.


But to reply to an individual message, or to include images, attachments and formatted text, use the reply buttons on each message above.

To start a new topic in this forum, click the Start new topic button below.
To start a new topic in a different forum, click the Forum Jump drop-down list below.

             Start new topic 

 click to jump to a different forum:     Back to top of page

Templot Club > Forums > Baffled beginners > Importing and scaling background plan
about Templot Club

list recently active topics Templot Companion - User Guide - A-Z Index Templot Explained for beginners Please click: important information for new members and first-time visitors.
indexing link for search engines

back to top of page


Please read this important note about copyright: Unless stated otherwise, all the files submitted to this web site are copyright and the property of the respective contributor. You are welcome to use them for your own personal non-commercial purposes, and in your messages on this web site. If you want to publish any of this material elsewhere or use it commercially, you must first obtain the owner's permission to do so.

The small print: All material submitted to this web site is the responsibility of the respective contributor. By submitting material to this web site you acknowledge that you accept full responsibility for the material submitted. The owner of this web site is not responsible for any content displayed here other than his own contributions. The owner of this web site may edit, modify or remove any content at any time without giving notice or reason.
Problems with this web site? Contact webmaster@templot.com.   This web site uses cookies: click for information.  
© 2019  

Powered by UltraBB - © 2009 Data 1 Systems