Thanks, folks. But how do I know my x-pixel resolution? And y-pixel resolution? Can it be derived from EXTENT parameters?
Thanks again, -Kresh --- On Mon, 11/3/08, Robert Sanson <[EMAIL PROTECTED]> wrote: > From: Robert Sanson <[EMAIL PROTECTED]> > Subject: Re: [mapserver-users] Matching .TFW file with EXTENT parameter? > To: mapserver-users@lists.osgeo.org, [EMAIL PROTECTED] > Date: Monday, November 3, 2008, 2:35 PM > Hi Kresh > Tiff World File (.tfw) > 6 rows: > First row is x-pixel resolution (width in your coordinate > system) > Second and third rows are so-called "rotational > components" but are set to zero in the case of an > unrotated mapsheet. > The fourth row is the y-pixel resolution (dimension in > coordiantes). The negative sign indicates that the image > y-axis is positive down which is the opposite from real > world coordinates. > The 5th and 6th rows are the Easting and Northing of the > middle of the upper left pixel > Robert > > >>> "[EMAIL PROTECTED]" > <[EMAIL PROTECTED]> 3/11/2008 8:19 p.m. > >>> > I have a map file with following MapExtent parameter: > EXTENT 106.335006 -6.896956 107.315811 -5.983994 > > Recently, I got a TIFF file without coordinates. I plan to > use the TIFF file with my map. Thus, I'm supposed to > create a .TFW file using text editor, am I correct? > > Problem is: I'm not sure what parameter to be put in > the .TFW file. Here is the parameters I put in my TFW file > so far: > 1.000 > 0.000 > 0.000 > -1.000 > 106.335006 > -5.983994 > > And I failed to show the raster on my map. > > Please note that I am merely guessing. It seems that the > fifth and the sixth like of the TFW should be the leftmost > and rightmost number of my EXTENT parameter, respectively, > but I have no idea what the first four lines are for. > > Based on EXTENT parameter above, what the correct .TFW > values should be? Many thanks, > > -Kresh > > > > > > _______________________________________________ > mapserver-users mailing list > mapserver-users@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/mapserver-users > > ------------------------------------------------------------------ > The contents of this email are confidential to > AsureQuality. If you have received this communication in > error please notify the sender immediately and delete the > message and any attachments. The opinions expressed in this > email are not necessarily those of AsureQuality. This > message has been scanned for known viruses before delivery. > AsureQuality supports the Unsolicited Electronic Messages > Act 2007. If you do not wish to receive similar > communications in future, please notify the sender of this > message. > ------------------------------------------------------------------ > > > This message has been scanned for malware by SurfControl > plc. www.surfcontrol.com _______________________________________________ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users