Hi Nate
> I have a database query that returns a variable length list of hosts for
> which I want to plot some data about.
> How can I pass Gnuplot.plot a list of Gnuplot.Data types?
I don't think there is a way. Is that right Michael ?
I did hack Gnuplot to do what you want. Michael, could
you please take a look ? Is it safe to apply to CVS ?
It seems to work for me. Replace the "_add_to_queue'
method in _Gnuplot.py, by the following
hacked version:
#### CODE BEGINS
def _add_to_queue(self, items):
"""Add a list of items to the itemlist (but don't plot them).
'items' is a sequence of items, each of which should be a
'PlotItem' of some kind, a string (interpreted as a function
string for gnuplot to evaluate), or a Numeric array (or
something that can be converted to a Numeric array).
"""
def _add_item(item):
if isinstance(item, PlotItems.PlotItem):
self.itemlist.append(item)
elif type(item) is types.StringType:
self.itemlist.append(PlotItems.Func(item))
else:
# assume data is an array:
self.itemlist.append(PlotItems.Data(item))
for item in items:
if type(item) is types.ListType:
# assume it is a list of PlotItems
for plot_item in item:
_add_item(plot_item)
else:
# assume it is a regular PlotItem
_add_item(item)
#### CODE ENDS
Essentially I moved the original functionality to "_add_item()",
and I chech for each "item" whether it is really a PlotItem, or
a list of PlotItems instead. Then I pass the data to "_add_item()
accordingly.
Anyways, hope this helps,
-- Leo
On Thu, 6 Nov 2003, Nate Gelbard wrote:
> Hi,
>
> I have a database query that returns a variable length list of hosts for
> which I want to plot some data about.
> How can I pass Gnuplot.plot a list of Gnuplot.Data types?
> In the past I knew how may lines I had on the graph so I could just pass
> g.plot(gd1,gd2,gd3,gd4) .... how do I
> make a variable length variable list?
>
> I was trying this but got a TypeError: bad argument type for built-in
> operation
>
> plot_list = []
> for i in res.keys():
> print i
> x = Numeric.arange(len(res[i]),typecode=Numeric.Float)
> y = Numeric.zeros(len(res[i]))
> for j in range(0,len(res[i])):
> line = res[i]
> y[j] = line[j][0]
> gd = Gnuplot.Data(x,y,title=i,smooth=smoothtype)
> plot_list.append(gd)
> g.plot(plot_list)
>
> Thanks,
> --( Nate Gelbard, QA Engineer
> --( Tripwire, Inc., The Integrity Assurance Company
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