Luiz Geron wrote: > I don't have experience on this, but I think that you can make the > script return the image "contents" directly to the img tag, without > passing it to a img file, so you can use something like this: > > <img src="script_that_return_image_contents"> > > wich saves some processing and I/O. >
I like this method. You have 2 cgi scripts: one that creates your html with that img tag in it, and a 2nd one to generate the image file on the fly when the browser asks for it. For generating the plot, I tried pychart http://home.gna.org/pychart/ and it was pretty nice. If using pychart, your script that emits image contents might look like this: ------------------------ code ------------------------ #!/usr/bin/python # Not using cgi module at this point, since this script # isn't very smart yet. :) import sys sys.argv.append( '--format=png' ) print "Content-type: image/png" print from pychart import * theme.get_options() theme.scale_factor = 3 theme.reinitialize() import random data = [] for i in range(10): data.append( (i, random.random()* 3.0) ) xaxis = axis.X( format="/hL%d", label="time" ) yaxis = axis.Y( label="synaptic activity" ) ar = area.T( x_axis=xaxis, y_axis=yaxis, y_range=(0,None), size=(120,110) ) plot = line_plot.T( label="cortex data", data=data, ycol=1, tick_mark=tick_mark.star ) ar.add_plot( plot ) ar.draw() --------------------- /code ------------------------ Try the script out -- it'll work as-is once you've installed pychart. You can add logic to it to generate your plot depending on what you pass in, encoded in the URL request. Just import the cgi module for getting those parameters. ---J -- (remove zeez if demunging email address) -- http://mail.python.org/mailman/listinfo/python-list
