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{alias:psc}
h2. Name
*psc* — PostScript plotting
h2. Syntax
{panel:|borderStyle=solid|borderWidth=1|bgColor=#FFFFAA}
*psc lwf | slwf | on | off | open | close | scp | fontsize | vie | align | status | prot | col | font | fill | rec | stroke | expand | talign | txt | axes | curtxt | pos | line | chf | utmgrid | moveto | lineto | win | devcm2user | arc | ssc | bmp | jpeg | cross | newline | clip | linestyle | linewidth | outline | dash | overprint | ticml | pattern*
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h2. Description
PostScript plotting, settings and commands.
The plotting system in Geocap called dplot is applying these commands to plot maps with a high carthographic standard.
PostScript is a state system which means that a specific setting is valid until a new setting is applied.
Note that it is possible to use *psc com* to write native PostScript commands. Check the [PostScript Reference Manual (third edition)|http://www.adobe.com/products/postscript/pdfs/PLRM.pdf].
h2. Arguments
*lwf* _line\_width\_factor_
{indent}Set the _line\_width\_factor_ of a postscript pen.{indent}
*slwf* _line\_width\_factor_
{indent}Set _line\_width\_factor_ for shift lines in contouring.{indent}
*open* _file\_name_
{indent}Open the _file\_name_ for writing postscript output.{indent}
*close*
{indent}Close the current output file for writing postscript output.{indent}
*scp* _scale\_in\_meters\_x_ _scale\_in\_meters\_y_ _rel\_portion\_of\_horizontal\_margin\_left_ _rel\_portion\_of\_vertical\_margin\_bottom_
{indent}Scale plot, using the scale parameters for plot in x and y direction and the relative portion of the margins.{indent}
*fontsize* _fontsize_ \[*cm*]
{indent}Set the fontsize in user coordinates or in cm.{indent}
*vie* _x\_lower\_left_ _y\_lower\_left_ _x\_upper\_right_ _y\_upper\_right_ \[*cm*]
{indent}Set viewport area, either in relative coordinates or in cm.{indent}
*align* \[*top | bottom | left | right | center*]
{indent}Set graphics alignment.{indent}
*status*
{indent}Will write out the status of postscript in the message window.{indent}
*prot* \[*reset*] | _x\_position_ _y\_position_ _rotation\_angle_ \[*cm*]
{indent}Set rotation of plot in user or cm coordinates.{indent}
*col* _red blu gre_
{indent}Display the postscript line in rgb values _red blu gre_. Observe that the standard col command will also affect postscript when active.{indent}
*font* _font\_number_
{indent}Will set the font with the given _font\_number_.{indent}
*fill*
{indent}Will issue the postscript *fill* command in the output file.{indent}
*stroke*
{indent}Will issue the postscript *stroke* command in the output file.{indent}
*rec* _x\_lower\_left_ _y\_lower\_left_ _x\_upper\_right_ _y\_upper\_right_
{indent}Will draw a rectangle according to the parameter input.{indent}
*expand hor | ver | inside | outside | cover*
{indent}Will expand the plot inside the viewport according to the argument.{indent}
{indent}
{info:title=Scale to match width of window/viewport}
*hor*: scale_y = scale_x.
*ver*: scale_x = scale_y.
*inside*: shortest of scale_x or scale_y.
*outside*: longest of scale_x or scale_y.
*cover*: scale to viewport exactly.
{info}
{indent}
*txt* _text_
{indent}Display text in the plot using the active font and font size.{indent}
*curtxt* _curve\_text_ \[*size* _size_] \[*rot* _rot\_angle_] \[*use*] \[*bsp*] \[*palign* _align\_x_ _align\_y_]
{indent}Display _curve\_text_ by following the curve in active data using the active font and font size.
*use*: use the curve as it is. *bsp*: b-spline the curve. *palign*: position aligning the text according to _align\_x_ _align\_y_.
If these parameters are set to 0 the text will be placed on the line.{indent}
*axes n | e | w | s* \[_incrx | incry | factorx | factory | offsetx | offsety_]
{indent}Display axes for side: north | east | west | south. Specify increment, factor and offset.{indent}
*talign* _x\_position_ _y\_position_
{indent}Set graphics alignment of text.{indent}
*ticml* _tic\_mark\_length_
{indent}Specify tic mark length for axes of size _tic\_mark\_length_.{indent}
*pos* _x\_position_ _y\_position_ *cm*
{indent}Set current position. Possibly translate from user to cm.{indent}
*line* _x\_start_ _y\_start_ _x\_stop_ _y\_stop_
{indent}Will draw a line from start to stop.{indent}
*chf* _crosshair\_factor_
{indent}Factor of the small cross lines in geographical grid.{indent}
*utmgrid* _delta\_x_ _delta\_y_ _cross\_size_
{indent}Plotting of utmgrid or current projection.{indent}
*moveto* _x\_start_ _y\_start_
{indent}Will move the pen to the start position.{indent}
*lineto* _x\_stop_ _y\_stop_
{indent}Will draw the pen to the stop position.{indent}
*win* _x\_lower\_left_ _y\_lower\_left_ _x\_upper\_right_ _y\_upper\_right_ \[*aoi*]
{indent}Set plot window area in world coordinates. *aoi* means set this as area of interest.{indent}
*devcm2user*
{indent}Will return to a Tcl variable the factor between cm and user coordinates.{indent}
*user2devcm*
{indent}Will return to a Tcl variable the factor between user and cm coordinates.{indent}
*arc* _x\_center_ _y\_center_ _radius_ _start\_angle_ _stop\_angle_
{indent}Will draw an arc according to the parameters specified.{indent}
*ssc*
{indent}Will set the area of interest to match the bounding box of active data.{indent}
*bmp | jpeg | jpg* _file\_name_ | *use*
{indent}Display a bit map of specified format from a _file\_name_ or use the current graphics on the screen.{indent}
*cross* _x\_center_ _y\_center_ _size_
{indent}Will draw a cross at _x\_center y\_center_ with the total size in x and y directions.{indent}
*newline*
{indent}Issue a new text line equivalent to 1.2 times the fontsize.{indent}
*clip* _x\_lower\_left y\_lower\_left x\_upper\_right y\_upper\_right_
{indent}Clip out an area of the plot in user coordinates.{indent}
*linestype* _line\_style_
{indent}Will set the line style, use 0,1 or 2. Ref. [PostScript Reference Manual (third edition)|http://www.adobe.com/products/postscript/pdfs/PLRM.pdf] p.673-674????, setlinecap.
*linewidth* _line\_width_
{indent}Will set the line with size. To be used in pattern specifications.{indent}
*outline on | off*
{indent}Will set outline of text on | off.{indent}
*overprint on | off*
{indent}Will set overprint of graphics on | off.{indent}
*dash* _dash1 space1 dash2 space2_ etc...
{indent}Will set line plotting in dash mode according to the dash pattern. Ref. [PostScript Reference Manual (third edition)|http://www.adobe.com/products/postscript/pdfs/PLRM.pdf] p.666.
*pattern open* _x\_size y\_size_
{indent}Open a pattern of size _x\_size y\_size_.
The postscript commands making up the pattern should be coded hereafter.{indent}
*pattern close* _name_ \[_rotation_]
{indent}Close the active pattern and name it _name_. Optionally use a rotation.{indent}
*pattern* _name_
{indent}Use pattern with name of pattern _name_.{indent}
h2. Examples
h3. Ex.1: Producing a postscript plot
{noformat:|borderWidth=1|bgColor=#eeeeee}
psc format a4 ;# specify format
win demo ;# demo window: 450000 460000 6450000 6460000 1000 4000
psc open c:/users/olav/psfile.ps ;# open output file
psc on ;# set postscript on
psc vie 0.1 0.1 0.9 0.9 ;# specify viewport in viewport coordinates
mak ran 11 ;# make 11 random points
grp 99 99 ;# grid surface 99 x 99 elements
sma i 250 can ;# spline map and annotate contours
psc off ;# turn off postscript
sma i 250 sav ;# spline map and sav contours
psc on ;# turn on postscript
mak glc ;# get largest cell
col red ;# set red color
pol ;# draw the line
psc fontsize 1.5 cm ;# set font size
psc col .3 .2 .6 ;# set color
psc curtxt "Largest contour" palign 0 0 ;# plot text to follow curve with no alignment
psc pos 450200 6461000 ;# specify position
psc fontsize 2.8 cm ;# set font size
psc col .5 .9 .9 ;# set color
psc txt "This is a text" ;# plot text
psc outline on ;# activate outline
psc lwf 2 ;# set line width factor
psc col 0 0 0 ;# color black
psc txt "This is a text" ;# plot outline around text
psc outline off ;# outline feature off
psc lwf 1 ;# reset line width factor
col gre ;# set green color
dra dwa ;# dra data window area
psc fontsize 0.5 cm ;# set font size
psc ticml 0.15 ;# set tic mark length (in cm)
psc axes ns incrx 2000 incry 2000 ;# draw axes in north and south
psc axes ew incrx 2000 incry 2000 ;# draw axes in east and west
psc close ;# close postscript
{noformat}
The above example produces this image.
!att:_img_ref^psc.png!
_Simple postscript plot to demonstrate principles._
h2. See also
[pol], [map], [sma] |
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