PostScript (.ps)
Open BetaPostScript (.ps) este un limbaj de descriere a paginii dezvoltat de Adobe, predecesorul PDF. Un standard pentru pre-press și arhivare în publicistica științifică, acceptat de mii de imprimante și servere RIP. Ideal pentru fluxul de lucru LaTeX (dvips → ps2pdf) și pentru păstrarea pe termen lung, în arhive, a machetelor vectoriale editabile ale hărților.
Caracteristici principale
Despre formatul PostScript
PostScript is a page description language invented by Adobe in the early 1980s; PDF grew directly out of it. A .ps file is, in essence, a small program executed by the interpreter inside a printer or a RIP server: it draws vector outlines, text and raster inserts. Level 3 is still understood by office and print-shop devices, and the free Ghostscript opens such a file on any operating system.
An OpenStreetMap map is exported to PostScript when the result goes into a printing or archival pipeline: hand it to a print shop, put it on a RIP, keep the layout in editable vector form for years ahead. For on-screen viewing the format is awkward — usually a .ps is first turned into a PDF with a single command.
Here is how the file is built on our side: QGIS draws the sheet in vector, the labels stay as text with embedded fonts, and then Ghostscript converts the result into PostScript Level 3 with a standard DSC structure. The sheet is 297x210 mm by default (A4 in landscape orientation), raster elements are 300 DPI. PostScript has no layers by the design of the format itself: the map arrives as a single stream of vector commands.
Ce program deschide fișierele PostScript
Următoarele programe și aplicații pot deschide, edita și prelucra fișiere PostScript (.ps) (.ps) exportate din OSM2CDR:
Format specifications
- Open standard
- 2D only
- Lossless (no quality loss)
- No attributes
- Output: 1 file
- PostScript Level 3. Page-description language for printers; open with Ghostscript or convert to PDF for viewing.
Cine folosește hărțile PostScript
Cum se exportă PostScript
Cum se deschide fișierul după export
- Ghostscript (free) — both viewing and conversion: ps2pdf map.ps map.pdf gives you a PDF, and calling gs with -r300 rasterizes the sheet at the resolution you need.
- GSview on Windows or Evince on Linux — open the .ps directly and look at the page without converting it.
- Adobe Distiller — the regular prepress route: PostScript in, PDF with font and color control out.
- A print shop or a RIP server — the file is handed over as is; agree on the sheet size and margins in advance, otherwise the map will be trimmed at the edge.
- LaTeX — for pdflatex convert the file to PDF with ps2pdf and insert it with the usual includegraphics; in the classic latex + dvips pipeline EPS is more common for illustrations, and you can download that from us too.
Hărți populare în PostScript
Obține exporturi de hărți PostScript (.ps)
Descarcă hărți PostScript profesionale din OpenStreetMap. Generare instantanee, orice zonă.