diff options
| author | Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk> | 2020-04-26 21:10:43 +0100 |
|---|---|---|
| committer | Kevin Darbyshire-Bryant <6500011+ldir-EDB0@users.noreply.github.com> | 2020-05-05 11:58:49 +0100 |
| commit | edc41b26ab1e78d55e87c79562d8430b87d314a7 (patch) | |
| tree | 747094640fbd4d473980c6179d8ff080834524b9 | |
| parent | d6caf776aeaba806f0d528d9504fc19e13e8211b (diff) | |
rrdtool1: modify logarithmic scale labelling
The y-axis graph labels in logarithmic mode display in 'scientific'
notation eg: '1e+00' for 0, '1e+01' for 10, '1e+02' for 100 and so on.
This IMO is a pain in the backside for non scientific humans to read.
Modified output to display numbers up to 99,999 in conventional decimal
format and to revert to scientific notation for larger, thus the same
display space is taken.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
| -rw-r--r-- | utils/rrdtool1/Makefile | 2 | ||||
| -rw-r--r-- | utils/rrdtool1/patches/040-no-e-notation-on-log-display.patch | 27 |
2 files changed, 28 insertions, 1 deletions
diff --git a/utils/rrdtool1/Makefile b/utils/rrdtool1/Makefile index 49da89fc1..a031c17d5 100644 --- a/utils/rrdtool1/Makefile +++ b/utils/rrdtool1/Makefile @@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk PKG_NAME:=rrdtool1 PKG_VERSION:=1.0.50 -PKG_RELEASE:=2 +PKG_RELEASE:=3 PKG_BUILD_DIR:=$(BUILD_DIR)/rrdtool-$(PKG_VERSION) PKG_SOURCE:=rrdtool-$(PKG_VERSION).tar.gz diff --git a/utils/rrdtool1/patches/040-no-e-notation-on-log-display.patch b/utils/rrdtool1/patches/040-no-e-notation-on-log-display.patch new file mode 100644 index 000000000..45551670c --- /dev/null +++ b/utils/rrdtool1/patches/040-no-e-notation-on-log-display.patch @@ -0,0 +1,27 @@ +--- a/src/rrd_graph.c ++++ b/src/rrd_graph.c +@@ -2049,7 +2049,7 @@ horizontal_log_grid(gdImagePtr gif, imag + char graph_label[100]; + gdPoint polyPoints[4]; + int styleMinor[2],styleMajor[2]; +- double value, pixperstep, minstep; ++ double value, pixperstep, minstep, yval; + + /* find grid spaceing */ + pixpex= (double)im->ysize / (log10(im->maxval) - log10(im->minval)); +@@ -2118,7 +2118,14 @@ horizontal_log_grid(gdImagePtr gif, imag + + gdImageLine(gif, polyPoints[0].x,polyPoints[0].y, + polyPoints[1].x,polyPoints[0].y,gdStyled); +- sprintf(graph_label,"%3.0e",value * yloglab[majoridx][i]); ++ yval = value * yloglab[majoridx][i]; ++ if (yval >= 100000) { ++ sprintf(graph_label,"%3.0e", yval); ++ } else { ++ if (yval == 1) /* prints as 1e+00 */ ++ yval = 0; ++ sprintf(graph_label,"%5.0f", yval); ++ } + gdImageString(gif, SmallFont, + (polyPoints[0].x - (strlen(graph_label) * + SmallFont->w)-7), |