I'm charting financial data, so scientific notation is unwanted in ALL cases.
Sometimes if I pass it data with just a few trades right near each other, it
scales so the y-axis get set to some bizare exponent, like 1.7321e1. By the
way, why would anyone ever want a plot in scientific notation where
This is the relevant code:
import sys, shutil
import matplotlib
from matplotlib.figure import Figure
from matplotlib.backends.backend_agg import FigureCanvasAgg
from mhd_scipy import load_mhd
from datetime import datetime
import matplotlib.dates as dates
import matplotlib.pyplot as plt
import nump
I'm trying to boil this thing down to a simple example program for you, it's
part of a big project so it's kind of tough, all the data is stored in RAM,
never in files...
It seems like there should be some way to just tell matplotlib to NEVER use
scientific notation for the axes... I'd be willing
Ok, here is the distilled code that displays the scientific formatting
failure I'm trying to fix. I had to wait until the market gave me a snapshot
that triggered this bug. Here is a quick link to the image I get when I run
this program: http://imgur.com/77DUbZp
I greatly appreciate your help with
Thank you! Success!
Yeah, I learned a little from this little exercise. I will set the "extent"
on the image to include a buffer in the y-axis, a certain percentage of
max(price)-min(price), for some durations.
If there is only a single trade during any duration, well... I need handle
that as a
for the record I had to put the buffer on the set_limit commands, not the
"extent" of the image, like so:
priceDiff = max(price)-min(price)
diffQuant = priceDiff / 4
minQuant = min(price)-diffQuant
maxQuant = max(price)+diffQuant
pl.set_ylim([minQuant,maxQuant])
and also include:
Hm. This stretches the background image (mhd data) to fit, leaving the
price line-plot not lining up with the background density plot. Now I have
to figure out how to make the density plot scale to fit...
--
View this message in context:
http://matplotlib.1069221.n5.nabble.com/Matplo
Ok, finally, to get the scaling to work, I rewrote the c density plotter to
accept a scaleFactor argument to affect a new max/min y-axis on that end and
pass it to the python script which reads the background as an mhd dataset.
Then I had to update my python to include the new scaled y-axis limits
