Re: [Tutor] finding a maximum between the absolute difference of several columns

2012-02-17 Thread Andre' Walker-Loud
> import numpy as np >> Vhel_fdiff3 = np.array([abs(Vmatch3_1 - Vmatch3_2), abs(Vmatch3_1 - >> Vmatch3_3), abs(Vmatch3_3 - Vmatch3_2)]) >> your_answer = Vhel_fdiff3.max(axis=0) > > or > > import numpy as np > a = np.array([Vmatch3_1-Vmatch3_2, Vmatch3_1-Vmatch3_3, Vmatch3_3- > Vmatch3_2]) > print

Re: [Tutor] finding a maximum between the absolute difference of several columns

2012-02-17 Thread Peter Otten
Andre' Walker-Loud wrote: > import numpy as np > Vhel_fdiff3 = np.array([abs(Vmatch3_1 - Vmatch3_2), abs(Vmatch3_1 - > Vmatch3_3), abs(Vmatch3_3 - Vmatch3_2)]) > your_answer = Vhel_fdiff3.max(axis=0) or import numpy as np a = np.array([Vmatch3_1-Vmatch3_2, Vmatch3_1-Vmatch3_3, Vmatch3_3- Vmatch3

Re: [Tutor] finding a maximum between the absolute difference of several columns

2012-02-16 Thread Andre' Walker-Loud
Hi Elaina, > Vhel_fdiff3=[] > for i in xrange(len(Vmatch3_1)): > Vhel_fdiff3.append(max([abs(Vmatch3_1[i] - Vmatch3_2[i]),abs(Vmatch3_1[i] > - Vmatch3_3[i]),abs(Vmatch3_3[i] - Vmatch3_2[i])])) > > #print Vhel_fdiff3 > #appending writes a list, but numpy which makes the with_ work needs a

Re: [Tutor] finding a maximum between the absolute difference of several columns

2012-02-16 Thread Elaina Ann Hyde
On Fri, Feb 17, 2012 at 2:27 PM, Mark Lawrence wrote: > On 17/02/2012 02:53, Elaina Ann Hyde wrote: > >> On Fri, Feb 17, 2012 at 1:41 PM, Rohan Sachdeva wrote: >> >> The way I would do this is to put all of the differences in a list then >>> take the maximum of the list. So.. >>> >>> a = Vmatch3

Re: [Tutor] finding a maximum between the absolute difference of several columns

2012-02-16 Thread Mark Lawrence
On 17/02/2012 02:53, Elaina Ann Hyde wrote: On Fri, Feb 17, 2012 at 1:41 PM, Rohan Sachdeva wrote: The way I would do this is to put all of the differences in a list then take the maximum of the list. So.. a = Vmatch3_1 - Vmatch3_2 b = Vmatch3_1 - Vmatch3_3 c = Vmatch3_3 - Vmatch3_2 Vhel_fdi

Re: [Tutor] finding a maximum between the absolute difference of several columns

2012-02-16 Thread Elaina Ann Hyde
On Fri, Feb 17, 2012 at 1:41 PM, Rohan Sachdeva wrote: > The way I would do this is to put all of the differences in a list then > take the maximum of the list. So.. > > a = Vmatch3_1 - Vmatch3_2 > b = Vmatch3_1 - Vmatch3_3 > c = Vmatch3_3 - Vmatch3_2 > > Vhel_fdiff3=max([a,b,c]) > > That should

Re: [Tutor] finding a maximum between the absolute difference of several columns

2012-02-16 Thread Mark Lawrence
On 17/02/2012 01:04, Elaina Ann Hyde wrote: Hello all, I am still scripting away and have reached my next quandry, this one is much simpler than the last, basically I read in a file with several columns. Vmatch3_1=dat[col1] Vmatch3_2=dat[col2] Vmatch3_3=dat[col3] Vdav=5.0 Vhel_fdiff3=max(abs(

[Tutor] finding a maximum between the absolute difference of several columns

2012-02-16 Thread Elaina Ann Hyde
Hello all, I am still scripting away and have reached my next quandry, this one is much simpler than the last, basically I read in a file with several columns. Vmatch3_1=dat[col1] Vmatch3_2=dat[col2] Vmatch3_3=dat[col3] Vdav=5.0 Vhel_fdiff3=max(abs(Vmatch3_1 - Vmatch3_2),abs(Vmatch3_1 - Vmatch3_