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From: zhangwei02 <zha...@ba...> - 2009-11-18 10:32:00
|
Hi
I use gnuplot-py ,load a file to draw a graph:
Code:
import Gnuplot, Gnuplot.funcutils
g = Gnuplot.Gnuplot(debug=1)
g.title('a example') # (optional)
g('set timefmt "%Y%m%d"')
g('set xlabel "Date"')
g('set format x "%Y%m%d"') #---------------- bug?
g('set ylabel "JobNum"')
g('set xtics rotate')
g('set terminal png font "fonts/msyh.ttf" 12') # add !
g('set output \'graph_1.png\'') # add!
filename='hadoop.data'
thefile1 = Gnuplot.File(filename, using = (1,2), with_='lines')
g.plot(thefile1)
the data file's 1st column is date string.
It execute as this:
gnuplot> set terminal x11
gnuplot> set title "a example"
gnuplot> set timefmt "%Y%m%d"
gnuplot> set xlabel "Date"
gnuplot> set format x "%Y%m%d"
gnuplot> set ylabel "JobNum"
gnuplot> set xtics rotate
gnuplot> set terminal png font "fonts/msyh.ttf" 12
gnuplot> set output 'graph_1.png'
gnuplot> plot "hadoop.data" using 1:2 with lines
gnuplot: unable to open display ''
gnuplot: X11 aborted.
line 0: Bad format character
the graph output is empty, but I execute it ok in gnuplot.
And when I comment the line above, the picture output is ok,but the x items are not date string, so it must be something wrong on the line
Is that a bug? Or how to set the output's format.
Thanks!
|
|
From: zhangwei02 <zha...@ba...> - 2009-11-18 10:28:44
|
Hi
I use gnuplot-py ,load a file to draw a graph:
Code:
import Gnuplot, Gnuplot.funcutils
g = Gnuplot.Gnuplot(debug=1)
g.title('a example') # (optional)
g('set timefmt "%Y%m%d"')
g('set xlabel "Date"')
g('set format x "%Y%m%d"') #---------------- bug?
g('set ylabel "JobNum"')
g('set xtics rotate')
g('set terminal png font "fonts/msyh.ttf" 12') # add !
g('set output \'graph_1.png\'') # add!
filename='hadoop.data'
thefile1 = Gnuplot.File(filename, using = (1,2), with_='lines')
g.plot(thefile1)
the data file's 1st column is date string.
It execute as this:
gnuplot> set terminal x11
gnuplot> set title "a example"
gnuplot> set timefmt "%Y%m%d"
gnuplot> set xlabel "Date"
gnuplot> set format x "%Y%m%d"
gnuplot> set ylabel "JobNum"
gnuplot> set xtics rotate
gnuplot> set terminal png font "fonts/msyh.ttf" 12
gnuplot> set output 'graph_1.png'
gnuplot> plot "hadoop.data" using 1:2 with lines
gnuplot: unable to open display ''
gnuplot: X11 aborted.
line 0: Bad format character
the graph output is empty, but I execute it ok in gnuplot.
So is that a bug? Or how to set the output's format as date.
Thanks!
|
