Rotating Tiff images in MapInfo.
Cowra Shire Council
I couldn't find adequate solution here to a raster image problem, so
hopefully someone might know.
I have digitised 20 odd old sewer plans into tif format and then
registered these in MapInfo.
Unfortunately, these tif images do not rotate to the orientation of
the spatial layers when displayed, but rotate everything to remain in
it's own orientation.
Does anybody know how to rectify this problem. Or is there a better
way to display these old plans?
Thanks for the help
John
Natalie Bennett
You have a few options here - have you GEOreferenced them into MI or are you just "displaying" them?
My first suggestion is to open them in Windows Picture And Fax Viewer:
1. Open Windows Explorer (WINDOWS BUTTON on keyboard + E)
2. Right click on the image > Select Open With... Choose Program
3. Select Windows Picture and Fax Viewer, but before you click OK, select "Always use the selected program to open this kind of file" (unless you prefer not to)
4. At this stage, your image may take a while to open (depending on it's size), but once displayed, you can rotate it to the correct orientation - this program then saves the orientation into the image's data permanently
My second suggestion is to use the MapInfo Tool:
1. Open your image in MapInfo
2. Go to Map > Options > Image Processing
3. Select either "Always" or "Optimized"
(Note: You can set this permanently for all future images by going to Options > Preferences > Image Processing, which may help for this task, however it does often slow down processing if you use raster images a lot)
4. Now go to Tools > Tool Manager and scroll down to Rotate Map Window and tick to Load
5. Now go to Tools > Rotate Map Window - Select Rotate Map Window
You can now choose the required rotation, then Save As to save a copy permanently rotated
We scanned all of our Parish Maps and had the same problem, and I fixed them all using the first option I think.
Also, don't forget afterward to convert your .TIF in ECW Compressor (supplied free with MapInfo), as this will considerably reduce the file size!
Regards
Nat Bennett
GIS Officer
Wellington Council
(02) 6840 1728
>>> Cowra Shire Council <jo...@cowra.nsw.gov.au> 19/07/2011 2:30 pm >>>
Hi Guys,
Thanks for the help
John
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Data Directions
Do a File > Close All.
Then try going to Options > Preferences > Image Processing and change the
"Reprojection" to Always.
Open up a known vector dataset and then your raster image. It should now
rotate to fit the vector data.
Regards,
Bill
=========================================================================
Hi Guys,
Thanks for the help
John
--
Cowra Shire Council
Hi Nat,
The orientation of the old plans is North being up, while our Town, I
guess you'd say our roads rotated by approximately 10.4 degrees. Don't
see how the Picture and Fax Viewer can modify this angle.
Although I guess there are other software to do this rotation, I
guess.
Will persist witht the second option.
Thanks Bill will try that.
On Jul 19, 2:51 pm, "Data Directions" <b...@datadirections.com.au>
wrote:
>
> - Show quoted text -
Natalie Bennett
Bill's solution is the one for you then - where you have correctly registered against control points and you need to align the two.
Regards
Nat Bennett
GIS Officer
Wellington Council
(02) 6840 1728
>>> Cowra Shire Council <jo...@cowra.nsw.gov.au> 19/07/2011 4:08 pm >>>
Hi Nat,
ktg cad
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Kalai Selvan
KTG Infotech
CAD/GIS/Geo spatial Services
Skypes- ktgcad
college.atlas
Had similar problems myself in the bad old days when aerial photos
arrived on photo paper!
I'd scan these then use Adobe Photoshop to rotate the image.
Obviously you need Photoshop or get in touch with a kindly printing
mob who maybe does your letter head and business cards and get them to
rotate the images for you.
I know Photoshop allows a pretty precise rotational angle like 10.4
degrees clockwise or counterclockwise. You can then register the image
properly without having all your vectors pushed and twisted around.
On Jul 20, 1:30 pm, ktg cad <ktg...@gmail.com> wrote:
> John, i face the same problem when i digitize heaps of maps using
> images..and the attachment is something i do to make them rotate,move,scale,
> hope this is useful to you..
> Cheers!!!!
>
> 445KViewDownload
>
> Q2.png
> 96KViewDownload
Wyatt, Phil (Parks)
Cheers - Phil
-----Original Message-----
From: mapi...@googlegroups.com [mailto:mapi...@googlegroups.com] On Behalf Of college.atlas
Sent: Wednesday, 20 July 2011 4:29 PM
To: MapInfo-L
Bill,
Had similar problems myself in the bad old days when aerial photos
arrived on photo paper!
I'd scan these then use Adobe Photoshop to rotate the image.
Obviously you need Photoshop or get in touch with a kindly printing
mob who maybe does your letter head and business cards and get them to
rotate the images for you.
I know Photoshop allows a pretty precise rotational angle like 10.4
degrees clockwise or counterclockwise. You can then register the image
properly without having all your vectors pushed and twisted around.
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college.atlas
On Jul 20, 4:49 pm, "Wyatt, Phil (Parks)"