On Thu, Nov 26, 2009 at 9:48 PM, <josef.p...@gmail.com> wrote: > On Thu, Nov 26, 2009 at 8:18 PM, Wayne Watson > <sierra_mtnv...@sbcglobal.net> wrote: >> Yes, I'm just beginning to deal with the contents of NumPy, SciLab, and >> SciPy. They all have seemed part of one another, but I think I see how >> they've divided up the game. NumPy has no graphics. PyLab has them, >> basically under matplotlib. histogram seems a bit odd to me. Here's >> what I mean. I chopped some lines out of the other program: >> import numpy >> import pylab >> #v = [5,5,2,2,2,6,4,4,3,3] >> v=[1,2,3,4] >> # Plot a normalized histogram >> pylab.hist(v, bins=8, normed=1) >> pylab.show() >> >> If it's run, I would have expected 4 bars separated by the same >> distance. The commented version of v is worse. It gives bar heights that >> are of an even height. Using more bins gives some odd length bars. Maybe >> an x row would help. >> >> While I'm at it what's with the two arrows at the bottom and the cross? >> I see the cross moves the drawing area, but does anyone really want to >> do that? The arrows seem to only move the drawing area slightly. Zoom, >> pencil, seems pretty offbeat. > > Do you mean this > http://matplotlib.sourceforge.net/users/navigation_toolbar.html > > Zoom is convenient when you have for example a thousand points with > lots of variation in one graph. > Browsing some examples in the matplotlib docs might be useful to get a > basic idea of it > e.g http://matplotlib.sourceforge.net/gallery.html > > The main docs for numpy scipy start here http://docs.scipy.org/doc/
http://docs.scipy.org/doc/ I guess a linebreak got wrongly interpreted Josef > many/most of the numpy functions have by now examples in the reference > guide and docstrings and might be more up to date than the tutorial. > It might be helpful to browse them in parallel to the tutorial. > > Josef > >> >> Pauli Virtanen wrote: >>> to, 2009-11-26 kello 15:08 -0800, Wayne Watson kirjoitti: >>> >>>> I guess the answer is easy about why a plot is not produced. The remark >>>> in the histogram line says this will not work in numpy. Oh, well. >>>> >>> >>> It works as it is intended to work. Numpy's histogram function just >>> computes the histogram -- you have to plot it yourself. >>> >>> Indeed, the next two lines in the example use Matplotlib (ie. pylab) to >>> plot the histogram. >>> >>> >> >> -- >> Wayne Watson (Watson Adventures, Prop., Nevada City, CA) >> >> (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) >> Obz Site: 39° 15' 7" N, 121° 2' 32" W, 2700 feet >> >> 350 350 350 350 350 350 350 350 350 350 >> Make the number famous. See 350.org >> The major event has passed, but keep the number alive. >> >> Web Page: <www.speckledwithstars.net/> >> >> _______________________________________________ >> NumPy-Discussion mailing list >> NumPy-Discussion@scipy.org >> http://mail.scipy.org/mailman/listinfo/numpy-discussion >> > _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
