Re: Triple nested loop python (While loop insde of for loop inside of while loop)
Am 01.03.2013 17:28, schrieb Isaac Won: What I really want to get from this code is m1 as I told. For this purpose, for instance, values of fpsd upto second loop and that from third loop should be same, but they are not. Actually it is my main question. You are not helping yourself... In any case, please drop everything not necessary to demostrate the problem before posting. This makes it easier to see what is going wrong both for you and others. Also make sure that others can actually run the code. Read this carefully, I didn't write that to fill up empty space. Also, read Eric S. Raymond's essay on asking smart questions (you can easily locate it online), which the problems with your question in a much more general way. Uli -- http://mail.python.org/mailman/listinfo/python-list
Triple nested loop python (While loop insde of for loop inside of while loop)
try to make my triple nested loop working. My code would be: c = 4 y1 = [] m1 = [] std1 = [] while c 24: c = c + 1 a = [] f.seek(0,0) for columns in ( raw.strip().split() for raw in f ): a.append(columns[c]) x = np.array(a, float) not_nan = np.logical_not(np.isnan(x)) indices = np.arange(len(x)) interp = interp1d(indices[not_nan], x[not_nan], kind = 'nearest') p = interp(indices) N = len(p) dt = 900.0 #Time step (seconds) fs = 1./dt #Sampling frequency KA,PSD = oned_Fourierspectrum(p,dt) # Call Song's 1D FS function time_axis = np.linspace(0.0,N,num = N,endpoint = False)*15/(60*24) plot_freq = 24*3600.*KA #Convert to cycles per day plot_period = 1.0/plot_freq # convert to days/cycle fpsd = plot_freq*PSD d = -1 while d 335: d = d + 1 y = fpsd[d] y1 = y1 + [y] m = np.mean(y1) m1 = m1 + [m] print m1 My purpose is make a list of [mean(fpsd[0]), mean(fpsd[1]), mean(fpsd[2]).. mean(fpsd[335])]. Each y1 would be the list of fpsd[d]. I check it is working pretty well before second while loop and I can get individual mean of fpsd[d]. However, with second whole loop, it produces definitely wrong numbers. Would you help me this problem? -- http://mail.python.org/mailman/listinfo/python-list
Re: Triple nested loop python (While loop insde of for loop inside of while loop)
Am 01.03.2013 09:59, schrieb Isaac Won: try to make my triple nested loop working. My code would be: c = 4 [...] while c 24: c = c + 1 This is bad style and you shouldn't do that in python. The question that comes up for me is whether something else is modifying c in that loop, but I think the answer is no. For that reason, use Python's way: for c in range(5, 25): ... That way it is also clear that the first value in the loop is 5, while the initial c = 4 seems to suggest something different. Also, the last value is 24, not 23. while d 335: d = d + 1 y = fpsd[d] y1 = y1 + [y] m = np.mean(y1) m1 = m1 + [m] Apart from the wrong indention (don't mix tabs and spaces, see PEP 8!) and the that d in range(336) is better style, you don't start with an empty y1, except on the first iteration of the outer loop. I'm not really sure if that answers your problem. In any case, please drop everything not necessary to demostrate the problem before posting. This makes it easier to see what is going wrong both for you and others. Also make sure that others can actually run the code. Greetings from Hamburg! Uli -- http://mail.python.org/mailman/listinfo/python-list
Re: Triple nested loop python (While loop insde of for loop inside of while loop)
On Fri, Mar 1, 2013 at 7:00 AM, Ulrich Eckhardt ulrich.eckha...@dominolaser.com wrote: Am 01.03.2013 09:59, schrieb Isaac Won: try to make my triple nested loop working. My code would be: c = 4 [...] while c 24: c = c + 1 This is bad style and you shouldn't do that in python. The question that comes up for me is whether something else is modifying c in that loop, but I think the answer is no. For that reason, use Python's way: for c in range(5, 25): ... That way it is also clear that the first value in the loop is 5, while the initial c = 4 seems to suggest something different. Also, the last value is 24, not 23. I concur with Uli, and add the following thoughts: What is going on with [y]? Is this really a list? So what is y1 + y1 + [y] doing? while d 335: d = d + 1 y = fpsd[d] y1 = y1 + [y] m = np.mean(y1) m1 = m1 + [m] In your outer loop you initialize these values each pass: dt = 900.0 #Time step (seconds) fs = 1./dt #Sampling frequency This should me moved out of the loop since nothing changes with dt or fs Apart from the wrong indention (don't mix tabs and spaces, see PEP 8!) and the that d in range(336) is better style, you don't start with an empty y1, except on the first iteration of the outer loop. I'm not really sure if that answers your problem. In any case, please drop everything not necessary to demostrate the problem before posting. This makes it easier to see what is going wrong both for you and others. Also make sure that others can actually run the code. Greetings from Hamburg! Uli -- http://mail.python.org/**mailman/listinfo/python-listhttp://mail.python.org/mailman/listinfo/python-list -- Joel Goldstick http://joelgoldstick.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Triple nested loop python (While loop insde of for loop inside of while loop)
On Fri, Mar 1, 2013 at 7:59 PM, Isaac Won winef...@gmail.com wrote: while c 24: for columns in ( raw.strip().split() for raw in f ): while d 335: Note your indentation levels: the code does not agree with your subject line. The third loop is not actually inside your second. Should it be? ChrisA -- http://mail.python.org/mailman/listinfo/python-list
Re: Triple nested loop python (While loop insde of for loop inside of while loop)
Thank you, Chris. I just want to acculate value from y repeatedly. If y = 1,2,3...10, just have a [1,2,3...10] at onece. On Friday, March 1, 2013 7:41:05 AM UTC-6, Chris Angelico wrote: On Fri, Mar 1, 2013 at 7:59 PM, Isaac Won winef...@gmail.com wrote: while c 24: for columns in ( raw.strip().split() for raw in f ): while d 335: Note your indentation levels: the code does not agree with your subject line. The third loop is not actually inside your second. Should it be? ChrisA -- http://mail.python.org/mailman/listinfo/python-list
Re: Triple nested loop python (While loop insde of for loop inside of while loop)
On Friday, March 1, 2013 7:41:05 AM UTC-6, Chris Angelico wrote: On Fri, Mar 1, 2013 at 7:59 PM, Isaac Won winef...@gmail.com wrote: while c 24: for columns in ( raw.strip().split() for raw in f ): while d 335: Note your indentation levels: the code does not agree with your subject line. The third loop is not actually inside your second. Should it be? ChrisA Yes, the thiird lood should be inside of my whole loop. Thank you, Isaac -- http://mail.python.org/mailman/listinfo/python-list
Re: Triple nested loop python (While loop insde of for loop inside of while loop)
Thank you Ulich for reply, What I really want to get from this code is m1 as I told. For this purpose, for instance, values of fpsd upto second loop and that from third loop should be same, but they are not. Actually it is my main question. Thank you, Isaac On Friday, March 1, 2013 6:00:42 AM UTC-6, Ulrich Eckhardt wrote: Am 01.03.2013 09:59, schrieb Isaac Won: try to make my triple nested loop working. My code would be: c = 4 [...] while c 24: c = c + 1 This is bad style and you shouldn't do that in python. The question that comes up for me is whether something else is modifying c in that loop, but I think the answer is no. For that reason, use Python's way: for c in range(5, 25): ... That way it is also clear that the first value in the loop is 5, while the initial c = 4 seems to suggest something different. Also, the last value is 24, not 23. while d 335: d = d + 1 y = fpsd[d] y1 = y1 + [y] m = np.mean(y1) m1 = m1 + [m] Apart from the wrong indention (don't mix tabs and spaces, see PEP 8!) and the that d in range(336) is better style, you don't start with an empty y1, except on the first iteration of the outer loop. I'm not really sure if that answers your problem. In any case, please drop everything not necessary to demostrate the problem before posting. This makes it easier to see what is going wrong both for you and others. Also make sure that others can actually run the code. Greetings from Hamburg! Uli -- http://mail.python.org/mailman/listinfo/python-list
