Welcome to the web driven PLplot plotting utility.

Click here to start a session (It may take a few seconds for the page to load).

Or, if you like, please check out this explanation of the various menu options:

• Window:
  1. Background Color: Select the desired background color for your plot.
  2. Foreground Color: Select the desired foregorund color for your plot. This color will be used to draw bounding box for the plot as well as the tick labels. It also the default color for all the other elements in the plot.
  3. Axis Font Size: Specify the font size for the tick labels relative to the default font size.
  4. Axis Line Width: Specify the width of the lines that surround the plot as well as those that make up the tick marks in pixels.
• Title:
  1. Title (UTF-8): Enter a UTF-8 encoded string to use as the title of the plot. Standard PLplot text escaping applies, as described below.
  2. Font Size: Specify the font size to use for the title.
  3. Displacement: Specify the how far you want the text to be from the edge of the plot.
  4. Location: Specify where you want the text along the edge of the plot. 0.0 will draw the text at the left hand edge of the plot and 1.0 will draw the text at the right hand edge of the plot.
  5. Color: Select a color for the title.
• X-Axis:
  • Text: See "Title".
  • Properties:
    1. Grid: Check this if you want to draw a grid at the major ticks.
    2. Axis Minimum: Specify the minimum value of the axis.
    3. Axis Maximum: Specify the maximum value of the axis.
    4. Major Tick Interval: Specify the spacing between major ticks. 0.0 is the default spacing.
    5. Minor Tick Number: Select the number of minor ticks to draw between major ticks.
• Y-Axis: See "X-Axis".
• Graph:
  1. Line Width: Specify the width of the line to use when plotting the data.
  2. Line Style: Select the line style.
  3. Symbol Size: Specify how large a symbol should be used to plot the data.
  4. Symbol Type: Select what type of symbol to use.
  5. Color: Select what color to use when plotting the lines and/or symbols.
• Data:
  • This menu lets you change the assignments of your data. X1 pairs with Y1, etc... Y data without corresponding X data is plotted versus X index. X data without corresponding Y data is plotted versus Y index.
• Update Plot:
  • This will update the plot based on the current plot parameters.

PLplot text escaping (See Also "Escape sequences in text" in the PLplot manual):

• Superscript: #u, "#u-2" (ended with #d).
• Subscript: #d, "#dn" (ended with #u).
• Backspace: #b (to allow overprinting).
• Number Symbol: ##.
• Overline: #+ (ended with #+).
• Underline: #- (ended with #-).
• Normal font: #fn.
• Roman font: #fr.
• Italic font: #fi.
• Script font: #fs.

How does it work?

• This sites source code.
• CL-PLplot, Lisp language bindings for PLplot.
• The UnCommon Web web development framework.

Questions & suggestions to hbabcock at hbabcock dot org.