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-rw-r--r--doc/user/gra_tick161
1 files changed, 126 insertions, 35 deletions
diff --git a/doc/user/gra_tick b/doc/user/gra_tick
index f6079cf..793390c 100644
--- a/doc/user/gra_tick
+++ b/doc/user/gra_tick
@@ -4,8 +4,13 @@
@Begin
@PP
@I Ticks are the short lines that mark off intervals along the axes, and
+graphs. @RawIndex { graphs (statistical) }
+graphs.ticks @SubIndex { ticks }
ticks.graph @Index { ticks in graphs }
-labels.graph @Index { labels in graphs }
+graphs. @RawIndex { graphs (statistical) }
+graphs.labels @SubIndex { labels }
+labels. @RawIndex { labels }
+labels.in.graphs @SubIndex { in graphs }
@I labels are the numbers appearing near the ticks (not to be confused
with captions). {@Code "@Graph"} produces ticks and labels automatically
with some care, so it is probably best not to worry about them unless the
@@ -13,6 +18,15 @@ result is not pleasing, in which case there are options for controlling them.
@PP
One simple way to control the production of x ticks is with the
{@Code xmin}, {@Code xmax}, and {@Code xticksep} options to @Code
+graphs. @RawIndex { graphs (statistical) }
+graphs.xmin @SubIndex { @Code xmin option }
+xmin.graph @Index { @Code "xmin" option (graphs) }
+graphs. @RawIndex { graphs (statistical) }
+graphs.xmax @SubIndex { @Code xmax option }
+xmax.graph @Index { @Code "xmax" option (graphs) }
+graphs. @RawIndex { graphs (statistical) }
+graphs.xticksep @SubIndex { @Code xticksep option }
+xticksep.graph @Index { @Code "xticksep" option (graphs) }
"@Graph". For example,
@ID @OneRow @Code {
"@Graph"
@@ -27,7 +41,9 @@ suitable values will be inferred from the data as usual.
@PP
Alternatively, complete control over the appearance of x ticks and labels
is provided by the @Code "xticks" option. For example,
-xticks.graph @Index { @Code "xticks" option to @Code "@Graph" }
+graphs. @RawIndex { graphs (statistical) }
+graphs.xticks @SubIndex { @Code xticks option }
+xticks.graph @Index { @Code "xticks" option (graphs) }
@ID @OneRow @Code {
"@Graph"
" xticks { 0@ 5 10@ 15 20@ }"
@@ -60,7 +76,7 @@ In fact, the labels inserted automatically when @Code xticks is omitted have
exponents when the axis is logarithmic, so @Code xticks is hardly necessary
in this example. Anyway the result is
@CD @Graph
- height { 3 cm }
+ height { 3c }
xlog { 10 }
xticks { 1 (1) 10 (10) 100 (10^2) 1000 (10^3) 10000 (10^4) 100000 (10^5) }
{
@@ -74,17 +90,37 @@ same as omitting {@Code xticks}).
@PP
Similar options control ticks and labels on the y axis: {@Code "ymin"},
{@Code "ymax"}, {@Code "yticksep"}, and {@Code "yticks"}. There are
-yticks.graph @Index { @Code "yticks" option to @Code "@Graph" }
+graphs. @RawIndex { graphs (statistical) }
+graphs.ymin @SubIndex { @Code ymin option }
+ymin.graph @Index { @Code "ymin" option (graphs) }
+graphs. @RawIndex { graphs (statistical) }
+graphs.ymax @SubIndex { @Code ymax option }
+ymax.graph @Index { @Code "ymax" option (graphs) }
+graphs. @RawIndex { graphs (statistical) }
+graphs.yticksep @SubIndex { @Code yticksep option }
+yticksep.graph @Index { @Code "yticksep" option (graphs) }
+graphs. @RawIndex { graphs (statistical) }
+graphs.yticks @SubIndex { @Code yticks option }
+yticks.graph @Index { @Code "yticks" option (graphs) }
also @Code "xticklength" and @Code "yticklength" options which set
the length of ticks:
+graphs. @RawIndex { graphs (statistical) }
+graphs.xticklength @SubIndex { @Code xticklength option }
+xticklength.graph @Index { @Code "xticklength" option (graphs) }
+graphs. @RawIndex { graphs (statistical) }
+graphs.yticklength @SubIndex { @Code yticklength option }
+yticklength.graph @Index { @Code "yticklength" option (graphs) }
@ID @OneRow @Code {
"@Graph"
-" xticklength { 0.5 ft }"
-" yticklength { 0.5 ft }"
+" xticklength { 0.5f }"
+" yticklength { 0.5f }"
}
shows the default values, half the current font size in both cases.
@PP
There is also an {@Code "rticks"} option which is similar to
+graphs. @RawIndex { graphs (statistical) }
+graphs.rticks @SubIndex { @Code rticks option }
+rticks.graph @Index { @Code "rticks" option (graphs) }
{@Code "yticks"} except that the ticks it controls appear on the
right-hand side of the frame (this option is relevant only when
the @Code style option is {@Code frame}). Unlike @Code "xticks" and
@@ -98,9 +134,9 @@ y ticks:
@Graph
style { frame }
width { 6c }
- height { 8c }
- xextra { 0 cm }
- yextra { 0 cm }
+ height { 6c }
+ xextra { 0c }
+ yextra { 0c }
rightcaption { -90d @Rotate { Precipitation mm } }
rightgap { 3.0f }
hidecaptions { no }
@@ -109,28 +145,28 @@ y ticks:
ymin { 0 }
ymax { 450 }
xticks { }
- xticklength { 0 cm }
+ xticklength { 0c }
rticks { 0@ 50@ 100@ 150@ 200@ 250@ 300@ 350@ 400@ 450@ }
yticks {}
{
@Data
- pairs { filledyhisto }
- colour { blue }
- linewidth { 1 pt }
+ pairs { filledyhisto }
+ colour { blue }
+ linewidth { 1 pt }
{
- 0 340
- 1 410
- 2 430
- 3 340
- 4 290
- 5 175
- 6 140
- 7 125
- 8 110
- 9 100
- 10 85
- 11 175
- 12 0
+ 0 340
+ 1 410
+ 2 430
+ 3 340
+ 4 290
+ 5 175
+ 6 140
+ 7 125
+ 8 110
+ 9 100
+ 10 85
+ 11 175
+ 12 0
}
}
@@ -139,9 +175,9 @@ y ticks:
@Graph
style { frame }
width { 6c }
- height { 8c }
- xextra { 0 cm }
- yextra { 0 cm }
+ height { 6c }
+ xextra { 0c }
+ yextra { 0c }
leftcaption { 90d @Rotate { Temperature {@Degree}C } }
leftgap { 2.5f }
hidecaptions { no }
@@ -163,13 +199,13 @@ y ticks:
10.5 (N)
11.5 (D)
}
- xticklength { 0 cm }
+ xticklength { 0c }
yticks { -30@ -20@ -10@ 0@ 10@ 20@ 30@ 40@ }
{
@Data
- pairs { solid }
- colour { red }
- linewidth { 1 pt }
+ pairs { solid }
+ colour { red }
+ linewidth { 1 pt }
{
0.0 24
1.0 24
@@ -193,8 +229,63 @@ Here the first graph has
"rticks { 0@ 50@ 100@ 150@ 200@ 250@ 300@ 350@ 400@ 450@ }"
"yticks {}"
}
-for its ticks.
-@PP
+for its ticks. This graph uses other features that we have not
+come to yet, but anyway its source is:
+@ID 0.95 @Scale -1px @Break @OneRow @Code @Verbatim {
+@Graph
+ style { frame }
+ width { 6c }
+ height { 6c }
+ xextra { 0c }
+ yextra { 0c }
+ rightcaption { -90d @Rotate { Precipitation mm } }
+ rightgap { 3.0f }
+ hidecaptions { no }
+ xmin { 0 }
+ xmax { 12 }
+ ymin { 0 }
+ ymax { 450 }
+ xticks { }
+ xticklength { 0c }
+ rticks { 0@ 50@ 100@ 150@ 200@ 250@ 300@ 350@ 400@ 450@ }
+ yticks {}
+{
+ @Data pairs { filledyhisto } colour { blue } linewidth { 1 pt }
+ {
+ 0 340 1 410 2 430 3 340 4 290 5 175 6 140
+ 7 125 8 110 9 100 10 85 11 175 12 0
+ }
+}
+
+@OverStrike
+
+@Graph
+ style { frame }
+ width { 6c }
+ height { 6c }
+ xextra { 0c }
+ yextra { 0c }
+ leftcaption { 90d @Rotate { Temperature {@Degree}C } }
+ leftgap { 2.5f }
+ hidecaptions { no }
+ xmin { 0 }
+ xmax { 12 }
+ ymin { -30 }
+ ymax { 50 }
+ xticks {
+ 0.5 (J) 1.5 (F) 2.5 (M) 3.5 (A) 4.5 (M) 5.5 (J)
+ 6.5 (J) 7.5 (A) 8.5 (S) 9.5 (O) 10.5 (N) 11.5 (D)
+ }
+ xticklength { 0c }
+ yticks { -30@ -20@ -10@ 0@ 10@ 20@ 30@ 40@ }
+{
+ @Data pairs { solid } colour { red } linewidth { 1 pt }
+ {
+ 0.0 24 1.0 24 2.0 25 3.0 26 4.0 26 5.0 26 6.0
+ 26 7.0 27 8.0 26 9.0 27 10.0 28 11.0 28 12.0 26
+ }
+}
+}
Lout has only a hazy idea of how much space is occupied by ticks and
labels. Unless @Code "xticks" is empty, Lout allows 1.7 times the
current font size below the graph for x ticks and labels, which is
generated by cgit (git 2.34.1) at 2024-11-14 22:06:04 +0000