Re: MI Raster image registration question
The feature is more than obsolete, it is a first class PITA when you are working with multiple raster files as we do. An ability to easily disable this "feature" would be VERY welcome. Aside from the versatility of Mr. Sid, the speed of modern processors and video cards makes redraw problems rather small. Not infrequently, I will be handling over a gig of raster images with very few redraw problems. By the way, ask an AkeView user if they can do that. Best, John D. Haynes Geodata Consultants 1-800-838-6661 www.geodataconsult.com -Original Message- From: Sue Port <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] <[EMAIL PROTECTED]> Cc: [EMAIL PROTECTED] <[EMAIL PROTECTED]> Date: Tuesday, September 07, 1999 10:52 PM Subject: RE: MI Raster image registration question >Hi Fran, > >Sounds like there's a zoom range set for the image layer. > >The zoom range for raster images is automatically set when they are added to >a mapper so if you're zoomed out a long way on a high resolution image it will >not be drawn. You can turn off the zoom layering by going to the layer control, >selecting the raster layer, pressing the display button and turning off the >"Display within Zoom Range". > >The reason MapInfo automatically sets the zoom range is to overcome lengthy >redraws. (ie a high resolution image can take a while to redraw when zoomed >out a long way). Unforunately this automatic feature is a bit obselete when >dealing with imagery that has re-scaling properties built-in (such as MrSID) >because it doesn't take any longer to view no matter what the zoom distance >is. > >Regards, >Sue. > > > adding Susan Port > value Technical Support Coordinator > to [EMAIL PROTECTED] > your >spatial Spatial Plus >systems http://www.spatialplus.com > > >>Hello follow listers, >>I have registered some aerial photos in MI to see how that process works and > >>it works quite well when the points are all in the correct positions! >>However, I have a question I hope someone can answer. These images are only > >>displaying at 1 mile zoom and greater. If I even select a zoom of 2 miles, > >>nothing, no image. These images were opened from .sid images using Mr. Sid, > >>and are listed by the vendor as "1foot" images, and encompass a section (a > >>Section 1 mile square of Township, Range ilk). There are also "10 foot" >>images that encompass a whole 36 section T,R, and I have registered one of > >>those and do not have the same problem with the zoom. Unfortunately, >>resolution is not all that great at higher zoom on that one!I have >>looked at the archives and the manuals and do not see an explanation of this > >>zoom thing anywhere. Any ideas/suggestions? Thanks in advance >> >>Fran Peck >>Office of Research and Planning >>Peoria Unified School District >>6330 W Thunderbird Rd >>Glendale, AZ 85306 >>623-486-6099 >>Fax: 623-486-6111 >>Email: [EMAIL PROTECTED] >> >>-- >>To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put >>"unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED] >-- >To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put >"unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED] > -- To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]
RE: MI Raster image registration question
Hi Fran, Sounds like there's a zoom range set for the image layer. The zoom range for raster images is automatically set when they are added to a mapper so if you're zoomed out a long way on a high resolution image it will not be drawn. You can turn off the zoom layering by going to the layer control, selecting the raster layer, pressing the display button and turning off the "Display within Zoom Range". The reason MapInfo automatically sets the zoom range is to overcome lengthy redraws. (ie a high resolution image can take a while to redraw when zoomed out a long way). Unforunately this automatic feature is a bit obselete when dealing with imagery that has re-scaling properties built-in (such as MrSID) because it doesn't take any longer to view no matter what the zoom distance is. Regards, Sue. adding Susan Port value Technical Support Coordinator to [EMAIL PROTECTED] your spatial Spatial Plus systems http://www.spatialplus.com >Hello follow listers, >I have registered some aerial photos in MI to see how that process works and >it works quite well when the points are all in the correct positions! >However, I have a question I hope someone can answer. These images are only >displaying at 1 mile zoom and greater. If I even select a zoom of 2 miles, >nothing, no image. These images were opened from .sid images using Mr. Sid, >and are listed by the vendor as "1foot" images, and encompass a section (a >Section 1 mile square of Township, Range ilk). There are also "10 foot" >images that encompass a whole 36 section T,R, and I have registered one of >those and do not have the same problem with the zoom. Unfortunately, >resolution is not all that great at higher zoom on that one!I have >looked at the archives and the manuals and do not see an explanation of this >zoom thing anywhere. Any ideas/suggestions? Thanks in advance > >Fran Peck >Office of Research and Planning >Peoria Unified School District >6330 W Thunderbird Rd >Glendale, AZ 85306 >623-486-6099 >Fax: 623-486-6111 >Email: [EMAIL PROTECTED] > >-- >To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put >"unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED] -- To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]
Re: MI Raster image registration question
Fran the problem you face is with a feature in every MapInfo Layer. It's called Zoom Layering. It gives you the ability to select layer by layer at what map scales or zoom levels a particular layer is visible. Your problem with the raster file is that it is currently set with zoom layering on and at an inconvenient zoom range. Go to layer control, select the raster layer and then click on Display. There will be an option for Zoom Layering. You can turn this off, which will enable you to see the map at any scale, or set it to a more appropriate zoom range. The need for zoom layering is for screen redraw times. The more imagery you have in a map window the longer the screen redraw. So you can see a lot of raster images displayed at any zoom range and it would take forever to redraw the map window. Hope this helps, Stan Johnston Geologist Fran Peck wrote: > > Hello follow listers, > I have registered some aerial photos in MI to see how that process works and > it works quite well when the points are all in the correct positions! > However, I have a question I hope someone can answer. These images are only > displaying at 1 mile zoom and greater. If I even select a zoom of 2 miles, > nothing, no image. These images were opened from .sid images using Mr. Sid, > and are listed by the vendor as "1foot" images, and encompass a section (a > Section 1 mile square of Township, Range ilk). There are also "10 foot" > images that encompass a whole 36 section T,R, and I have registered one of > those and do not have the same problem with the zoom. Unfortunately, > resolution is not all that great at higher zoom on that one!I have > looked at the archives and the manuals and do not see an explanation of this > zoom thing anywhere. Any ideas/suggestions? Thanks in advance > > Fran Peck > Office of Research and Planning > Peoria Unified School District > 6330 W Thunderbird Rd > Glendale, AZ 85306 > 623-486-6099 > Fax: 623-486-6111 > Email: [EMAIL PROTECTED] > > -- > To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put > "unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED] -- To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]
