diff options
Diffstat (limited to 'man/man1/gview.html')
| -rw-r--r-- | man/man1/gview.html | 155 |
1 files changed, 0 insertions, 155 deletions
diff --git a/man/man1/gview.html b/man/man1/gview.html deleted file mode 100644 index 6abdc7da..00000000 --- a/man/man1/gview.html +++ /dev/null @@ -1,155 +0,0 @@ -<head> -<title>gview(1) - Plan 9 from User Space</title> -<meta content="text/html; charset=utf-8" http-equiv=Content-Type> -</head> -<body bgcolor=#ffffff> -<table border=0 cellpadding=0 cellspacing=0 width=100%> -<tr height=10><td> -<tr><td width=20><td> -<tr><td width=20><td><b>GVIEW(1)</b><td align=right><b>GVIEW(1)</b> -<tr><td width=20><td colspan=2> - <br> -<p><font size=+1><b>NAME </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - gview – interactive graph viewer<br> - -</table> -<p><font size=+1><b>SYNOPSIS </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <tt><font size=+1>gview</font></tt> [ <tt><font size=+1>−l</font></tt> <i>logfile</i> ] [ <tt><font size=+1>−m</font></tt> ] [ <i>file</i> ]<br> - -</table> -<p><font size=+1><b>DESCRIPTION </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <i>Gview</i> reads polygonal lines or a polygonal line drawing from an - <tt><font size=+1>ASCII</font></tt> input file (which defaults to standard input), and views - it interactively, with commands to zoom in and out, perform simple - editing operations, and display information about points and polylines. - The editing commands can change the color and - thickness of the polylines, delete (or undelete) some of them, - and optionally rotate and move them. It is also possible to generate - an output file that reflects these changes and is in the same - format as the input. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - Since the <tt><font size=+1>move</font></tt> and <tt><font size=+1>rotate</font></tt> commands are undesirable when just viewing - a graph, they are only enabled if <i>gview</i> is invoked with the <tt><font size=+1>−m</font></tt> - option. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - Clicking on a polyline with button 1 displays the coordinates - and a <i>t</i> value that tells how far along the polyline. <i>(t</i>=0 at the - first vertex, <i>t</i>=1 at the first vertex, <i>t</i>=1.5 halfway between the - second and third vertices, etc.) The <tt><font size=+1>−l</font></tt> option generates a log - file that lists all points selected in this manner. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - The most important interactive operations are to <i>zoom in</i> by sweeping - out a rectangle, or to <i>zoom out</i> so that everything currently being - displayed shrinks to fit in the swept-out rectangle. Other options - on the button 3 menu are <i>unzoom</i> which restores the coordinate - system to the default state where everything fits on - the screen, <i>recenter</i> which takes a point and makes it the center - of the window, and <i>square up</i> which makes the horizontal and vertical - scale factors equal. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - To take a graph of a function where some part is almost linear - and see how it deviates from a straight line, select two points - on this part of the graph (i.e., select one with button 1 and - then select the other) and then use the <i>slant</i> command on the button - 3 menu. This slants the coordinate system so that the line - between the two selected points appears horizontal (but vertical - still means positive <i>y</i>). Then the <i>zoom in</i> command can be used - to accentuate deviations from horizontal. There is also an <i>unslant</i> - command that undoes all of this and goes back to an unslanted - coordinate system. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - There is a <i>recolor</i> command on button 3 that lets you select a - color and change everything to have that color, and a similar - command on button 2 that only affects the selected polyline. The - <i>thick</i> or <i>thin</i> command on button 2 changes the thickness of the - selected polyline and there is also an undo command for such - edits. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - Finally, button 3 had commands to <i>read</i> a new input file and display - it on top of everything else, <i>restack</i> the drawing order (in case - lines of different color are drawn on top of each other), <i>write</i> - everything into an output file, or <i>exit</i> the program. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - Each polyline in an input or output file is a space-delimited - <i>x y</i> coordinate pair on a line by itself, and the polyline is a - sequence of such vertices followed by a label. The label could - be just a blank line or it could be a string in double quotes, - or virtually any text that does not contain spaces and is on a - line by itself. The - label at the end of the last polyline is optional. It is not legal - to have two consecutive labels, since that would denote a zero-vertex - polyline and each polyline must have at least one vertex. (One-vertex - polylines are useful for scatter plots.)<br> - If the label after a polyline can contains the word <tt><font size=+1>Thick</font></tt> or a - color name <tt><font size=+1>(Red</font></tt>, <tt><font size=+1>Pink</font></tt>, <tt><font size=+1>Dkred</font></tt>, <tt><font size=+1>Orange</font></tt>, <tt><font size=+1>Yellow</font></tt>, <tt><font size=+1>Dkyellow</font></tt>, <tt><font size=+1>Green</font></tt>, - <tt><font size=+1>Dkgreen</font></tt>, <tt><font size=+1>Cyan</font></tt>, <tt><font size=+1>Blue</font></tt>, <tt><font size=+1>Ltblue</font></tt>, <tt><font size=+1>Magenta</font></tt>, <tt><font size=+1>Violet</font></tt>, <tt><font size=+1>Gray</font></tt>, <tt><font size=+1>Black</font></tt>, <tt><font size=+1>White</font></tt>), - whichever color name comes first will be used to color the polyline. - -</table> -<p><font size=+1><b>EXAMPLE </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - To see a graph of the function <i>y</i>=<i>sin(</i>x<i>)/</i>x generate input with - an awk script and pipe it into <i>gview</i>:<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <tt><font size=+1>awk 'BEGIN{for(x=.1;x<500;x+=.1)print x,sin(x)/x}' | gview<br> - </font></tt> - </table> - -</table> -<p><font size=+1><b>SOURCE </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <tt><font size=+1>/usr/local/plan9/src/cmd/draw/gview.c<br> - </font></tt> -</table> -<p><font size=+1><b>SEE ALSO </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <a href="../man1/awk.html"><i>awk</i>(1)</a><br> - -</table> -<p><font size=+1><b>BUGS </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - The user interface for the <i>slant</i> command is counter-intuitive. - Perhaps it would be better to have a scheme for sweeping out a - parallelogram.<br> - -</table> - -<td width=20> -<tr height=20><td> -</table> -<!-- TRAILER --> -<table border=0 cellpadding=0 cellspacing=0 width=100%> -<tr height=15><td width=10><td><td width=10> -<tr><td><td> -<center> -<a href="../../"><img src="../../dist/spaceglenda100.png" alt="Space Glenda" border=1></a> -</center> -</table> -<!-- TRAILER --> -</body></html> |