it is simple: .prn is for a print file. Normally they are files that are made for a specific printer on a pc and printed on an other pc that has that specific printer. .plt files are plotfiles made by a drawing application. .hgl are a special kind of plotfiles: they are written in HPGL. About HPGL: look in the extra's of NASS2-4. There is a program called PRINTGL. Along with this program there is a document describing nearly everything you always wanted to know about HPGL. After having read it you might be able to write yourself a .hgl file that plots the NASS logo........
At 10:01 8-4-00 -0400, you wrote: -----Original Message/Oorspronkelijk bericht-------------- >Hi All, > >I hope someone will be able to clarify the differences between HPGL, >prn, and plt files, and how they are meant to be used. HPGL and prn are >both text based files. > >Here is a snip from a HPGL file. The commands "PU" and "PD" stand for >"Pen Up" and "Pen Down" respectively. It would be logical that "PA" >stands for "Pen Advance" followed by the XY coordinates. > >PU;PA 3486, 5524; >PD;PA 8344, 6729; >PU;PA 8344, 1911; >PD;PA 8344, 6729; >PU;PA 3486, 706; >PD;PA 20, 1399; > >Here is a snip from a prn file produced by printing a DeltaCad drawing >to a HP plotter on File. The format is completely different. > >370,2005PRPD55,0PAPU-345,2000PRPD-50,0PAPU-370,1995PRPD-55,0PAPU-400,1990PR PD-50,0PAPU-425,1985PRPD-55,0,0,-5,30,0PAPU-475,1975PRPD-5,0PAPAPU-470,1985P RPD-5,0,5,-5,-20,0PAPU-510,1975PRPD40,0PAPU-490,1970PRPD-35,0PAPU-510,1965PR PD-35,0PAPU-560,1960PRPD35,0PAPU-545,1955PRPD-35,0PAPU-595,1950PRPD35,0PAPU- 580,1945PRPD-35,0PAPU-595,1940PRPD-40,0,0,-5,20,0PAPU-630,1930PRPD-5,0PAPAPU- > >I do not know what a plt file looks like, nor do I know if it's just an >alternate extension for a prn file - but I doubt it. > >Can anyone help? > >------------- > >Also, referring to the discussion of using printouts as templates, be >aware that printers do not all scale accurately, nor do they all produce >an accurate aspect ratio. In my experience my HP LaserJet III did both >perfectly. That printer has since gone where good printers go when they >die. My new HP OfficeJet 1175C (an ink jet as opposed to a laser jet) >does not produce an accurate aspect ratio. > >Best, > >Bob > ----------------------------------------------------------------- Thibaud Taudin-Chabot 52°18'19.85" North 04°51'09.45" East home email: [EMAIL PROTECTED] (attachments max. 500kB; for larger attachments contact me first)
