These are my rationalisations for the various par() graphical parameter names. These are not necessarily definitive (some of them are quite a stretch!), but hopefully they are still useful.
|
Graphics PARameter |
Memnonic |
|---|---|
| adj | Text ADJustment (i.e., justification). |
| ann | Draw plot ANNotations? (i.e., labels and titles). |
| ask | ASK before starting a new page? |
| bg | BackGround colour. |
| bty | Box TYpe (what style of box for box() to draw). |
| cex | Character EXpansion factor (text size multiplier). |
|
cex.axis cex.lab cex.main cex.sub |
cex for AXIS tick labels, axis LABels, MAIN plot label (title), and plot SUB-title. |
| cin | Character size in INches. |
| col | Drawing COLour. |
|
col.axis col.lab col.main col.sub |
Drawing colour for AXIS tick labels, axis LABels, MAIN plot label (title), and plot SUB-title. |
| cra | Character size in RAasters (pixels). |
| crt | Character RoTation angle. |
| csi | Character SIze (height) in inches. |
| cxy | Character size in XY coordinates (relative to the axis scales). |
| din | Device size in INches. |
| family | Text font FAMILY. |
| fg | ForeGround colour. |
| fig | Size of the FIGure region (as a proportion of the inner region). |
| fin | Size of the Figure region in INches. |
| font | Text FONT face. |
|
font.axis font.lab font.main font.sub |
Text FONT face for AXIS tick labels, axis LABels, MAIN plot label (title), and plot SUB-title. |
| lab | Placement of axis LABels. |
| las | Axis LAbel Style |
| lend | Line ENDing style. |
| lheight | Line HEIGHT (multiplier). |
| ljoin | Line JOIN style. |
| lmitre | Line MITRE limit (when does a pointy line join get beveled). |
| lty | Line TYpe (solid, dashed, ...). |
| lwd | Line WidDth |
| mai | Figure MArgins in Inches. |
| mar | Figure MARgins in lines of text. |
| mex | Figure Margin character EXpansion (multiplier). |
| mfcol | Number of Multiple Figures (use COLumn-wise). |
| mfg | Specify next figure in Multiple FiGure arrangement. |
| mfrow | Number of Multiple Figures (use ROW-wise). |
| mgp | MarGin Position for plot title and axis labels. |
| new | Is the plot region NEW? (not been drawn on). |
| oma | Size of the Outer MArgins in lines of text. |
| omd | Size of the Outer Margins as a proportion of the Device (page). |
| omi | Size of the Outer Margins in Inches. |
| pch | Plotting CHaracter (symbol). |
| pin | Size of the Plot region in INches. |
| plt | Size of the PLoT region as a proportion of the figure region. |
| ps | Text Point Size. |
| pty | Plot TYpe (points, lines, both). |
| srt | String (text) RoTation angle. |
| tck | Length of axis TiCK marks as a proportion of the plot region. |
| tcl | Length of axis TiC marks as a proportion of the height of a Line of text. |
| usr | The axis scale ranges (USeR coordinates). |
| xaxp | X-AXis tick mark Positions. |
| xaxs | X-AXis Style. |
| xaxt | X-AXis Type. |
| xpd |
I have NO IDEA where this came from. UPDATE: Bill Venables has proposed "Do you want to eXceed any of the Plotting Domains?" |
| yaxp | Y-AXis tick mark Positions. |
| yaxs | Y-AXis Style. |
| yaxt | Y-AXis Type. |