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Nicer sample plots in the docs

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Dima Kogan 2024-02-19 20:43:33 -08:00
parent 96ac271cda
commit 2db7f980b5
1 changed files with 97 additions and 41 deletions
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@ -1420,56 +1420,112 @@ Simple plotting of piped data:
10 25 10 25
$ seq 5 | awk '{print 2*$1, $1*$1}' | $ seq 5 | awk '{print 2*$1, $1*$1}' |
feedgnuplot --lines --points --legend 0 "data 0" --title "Test plot" --y2 1 feedgnuplot \
--unset grid --terminal 'dumb 80,40' --exit --lines \
--points \
--title "Test plot" \
--y2 1 \
--unset key \
--unset grid \
--terminal 'dumb 80,40' \
--exit
Test plot Test plot
10 +-----------------------------------------------------------------+ 25 10 +-----------------------------------------------------------------+ 25
| + + + + + + + *##| | + + + + + + + ##*|
| data 0 ***A*#* | | ##* |
| ** # | | ## * |
9 |-+ ** ## | 9 |-+ ## ** |
| ** # | | ## * |
| ** # | | ## * |
| ** ## +-| 20 | ## ** +-| 20
8 |-+ A # | 8 |-+ B * |
| ** # | | ## * |
| ** ## | | ## ** |
| ** # | | ## * |
| ** B | | ## A |
7 |-+ ** ## | 7 |-+ ## ** |
| ** ## +-| 15 | ## ** +-| 15
| ** # | | ## * |
| ** ## | | ## ** |
6 |-+ *A ## | 6 |-+ #B ** |
| ** ## | | ## ** |
| ** # | | ## * |
| ** ## +-| 10 | ## ** +-| 10
5 |-+ ** ## | 5 |-+ ## ** |
| ** #B | | ## *A |
| ** ## | | ## ** |
| ** ## | | ## ** |
4 |-+ A ### | 4 |-+ B *** |
| ** ## | | ## ** |
| ** ## +-| 5 | ## ** +-| 5
| ** ## | | ## ** |
| ** ##B# | | ## **A* |
3 |-+ ** #### | 3 |-+ ## **** |
| **#### | | ##**** |
| #### | | ##** |
|## + + + + + + + | |## + + + + + + + |
2 +-----------------------------------------------------------------+ 0 2 +-----------------------------------------------------------------+ 0
1 1.5 2 2.5 3 3.5 4 4.5 5 1 1.5 2 2.5 3 3.5 4 4.5 5
Here we asked for ASCII plotting, which is useful for documentation.
Simple real-time plotting example: plot how much data is received on the wlan0 Simple real-time plotting example: plot how much data is received on the wlan0
network interface in bytes/second (uses bash, awk and Linux): network interface in bytes/second. This plot updates at 1Hz, and shows the last
10sec of history. The plot shown here is the final state of a sample run
$ while true; do sleep 1; cat /proc/net/dev; done | $ while true; do
gawk '/wlan0/ {if(b) {print $2-b; fflush()} b=$2}' | sleep 1;
feedgnuplot --lines --stream --xlen 10 --ylabel 'Bytes/sec' --xlabel seconds cat /proc/net/dev;
done \
| gawk '/wlan0/ {if(b) {print $2-b; N++; fflush()} b=$2} N==15 {exit}' \
| feedgnuplot \
--lines \
--title "wlan0 throughput" \
--stream \
--xlen 10 \
--ylabel 'Bytes/sec' \
--xlabel seconds \
--unset key \
--unset grid \
--terminal 'dumb 80,40' \
--exit
wlan0 throughput
300000 +---------------------------------------------------------------+
| + + + + + |
| |
| |
| * |
250000 |-+ * +-|
| ** |
| * * |
| * * |
| * * |
| * * |
200000 |-+ * * +-|
| * * |
| * * |
| * * |
| * * |
150000 |-+ * *+-|
| * * |
| * * |
| * * |
| * * |
| * * |
100000 |-+ * *-|
| * * |
| * *|
| ** * *|
| *** * * *|
50000 |-+ *** * **** * +*|
| ** ** ***** ** * |
| ** * *** ** * |
| ***** * ***** ** |
|** *** |
| + + + + + |
0 +---------------------------------------------------------------+
6 8 10 12 14
seconds
=head1 DESCRIPTION =head1 DESCRIPTION