setcolor

obsolete

obsolete. See plt .

settext

obsolete

obsolete. See plt .

plt

obsolete

NAME

plt, setcolor- low level plot functions

SYNTAX

plt(mode)
plt(mode, x, y)
setcolor(colorval)

DESCRIPTION

Plt() plots points, lines, and text using the Tektronix 4010 standard. Absolute coordinates of the lower left corner and upper right corner of the plot region are (0,0) and (1000, 780) respectively. Setcolor() sets the color (or pen number for HP plotter)

TURBO-C graphics drivers for VGA, EGA, CGA, and Hercules are automatically selected when the first plotting command is executed. An HP7475 compatible plotter may be connected to COM1:.

OPTIONS

plt(-1): Place cursor in home position.
plt(-2): Subsequent text printed starting at current coordinate position.
plt(-3): Erase screen, cursor in home position.
plt(-5): Open HP plotter on PC.
setcolor(): The plotter will stay open till another plt(-5) is executed.
plt(0, x, y): Plot point.
plt(1, x, y): Move to point without plotting.
plt(2, x, y): Draw vector from former position to new position given by (x,y). (mode can be any number >= 2)

Several extra options are available for X11 graphics.

plt(-4, x, y): Erases area defined by previous plot position and the point, (x, y).
plt(-5): Fast mode. By default, the X11 server is flushed on every plot command so one can see the plot as it develops. Fast mode caches plot commands and only flushes on plt(-1) and setcolor(). Fast mode is three times faster than the default mode. It is most useful when plotting is the rate limiting step of the simulation.
plt(-6): X11 server flushed on every plot call.

When the graphic window is resized, hoc is notified after the next erase command.

Argument to setcolor() produces the following screen colors with an EGA adapter, X11 graphics:

0      black  (pen 1 on HP plotter)		black
1      blue					white
2      green					yellow
3      cyan					red
4      red					green
5      magenta					blue
6      brown					violet
7      light gray  (pen 1 on HP plotter)	cyan
...
15	white					green

EXAMPLES

proc plotsin() { /* This procedure plots the sin function in red.*/
   setcolor(4)
   plt(1, 100, 500)  plt(2, 100, 100) /* y-axis*/
   plt(1, 100, 300)  plt(2, 600, 300) /* x-axis*/
   plt(1, 200, 550)
   plt(-2)  print "SIN(x) from 0 to 2*PI" /* label*/
   for(i=0; i<=100;i=i+1){
      plt(i+1, i*500/100, 300 + 200*sin(2*PI*i/100))
   }
   plt(-1) /* close plot */
}

BUGS

s EGA adaptor used extensively but CGA and Hercules used hardly at all.

When the X11 graphic window is killed, hoc exits without asking about unsaved edit buffers.

neuron/general/function/obsolete/plt.hel : May 13 2012