--- Begin Forwarded Message --- Date: Mon, 29 Apr 2002 11:05:45 +0430 From: Osameh Alkaaby <[log in to unmask]> Subject: - No Subject - Sender: Osameh Alkaaby <[log in to unmask]> To: [log in to unmask] Reply-To: Osameh Alkaaby <[log in to unmask]> Message-ID: <[log in to unmask]> From: Osameh Alkaaby <[log in to unmask]> XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX Dear :er- mappers I have almost 50 areal photo sacale: 1/55000 with grayscale(related to 50 yeasr ago) so I have no more informations).Now I want to scan them and finally produce a layer. I have several quastion: 1) what is the best (DPI) during scaning. 2) what is the best format( image)during scaning. 3)who can I merge them together and geo-refrencing. 4) who can I control the size(scale) of image when using these images in GIS software . the elevation of the area is vary (1500-2000)meter. the system is Ram: 256 H.D.D :40 G by the way, my main objectiv is to produce an old layer to compared it with present information( satelitt data) to study landuse change in this time. any help will be appreciated. best regards osameh alkaaby * * * * * * * * * * * * * * * * * * * * * * * * Isfahan Science and Technology Town * * Desert Ecosystems Research Institute * * Ishfahan- Iran. * * Tel:0098-311-2658311-14 * * Fax:0098-311-2658310 * * [log in to unmask] WWW.istt.org * * * * * * * * * * * * * * * * * * * * * * * * --- End Forwarded Message ---