Hi Frank No Frank - there is a big advantage in using more dpi even for vector output to WMF.
The Windows Meta File is a record of the GDI instruction and the coordinates. For example it records to draw a line from X1,Y1 to X2,Y2. The calculations of coordinates is done AFTER you specify the dpi resolution. ie the Map gets rerendered to the values you supply. If you want high accuracy in your image then the higher the range of coordinates the more accurate the differences will be.Imagine you had a grid of 100 x values evenly spread across only 50 dpi in width half of the values would map onto the other 50. If you had 200 dpi width then they would each be 2 dpi apart and look much better. WMF has a limit of 2 bytes per ordinate ie plus/minus 32000 approx. Its big brother EMF allows 4 bytes per ordinate ie 4.2 GB byte per ordinate. This is the same as MapInfos internal accuracy ie 4 bytes per x ( and 4 per y) and so output to Enhanced MetaFile will give you the best resolution of all but you will see the file size bigger because of the 4 bytes ( instead of 2 bytes ) Regards Bob Quoting "Phillips, Frank" <[EMAIL PROTECTED]>: > If I'm correct, the WMF file format is a vector format, unlike JPG and BMP > which are raster formats, and raster formats can take advantage of image > resolution (dpi or ppi). When I do a "Save Window As" from a layout, I am > offered the chance to input a dpi measure for the WMF file, which strikes > me > as useless, considering it's a vector format. What's even more strange is > that when I wrote out two WMF files from the same layout (one at 240dpi and > one at 96dpi), the 240dpi WMF was only 10% bigger in file size than the > 96dpi WMF. > > Anyone care to comment on this? Feel free to tell me if I'm all wet....I > don't get my feelings hurt. > > Frank Phillips > Manager of Marketing GIS > Vulcan Materials Company (NYSE:VMC) > Birmingham, AL, USA > > --------------------------------------------------------------------- > List hosting provided by Directions Magazine | www.directionsmag.com | > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > Message number: 9848 > > --------------------------------------------------------------------- List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Message number: 9853
