ASKSAGE: Sage Q&A Forum - RSS feedhttps://ask.sagemath.org/questions/Q&A Forum for SageenCopyright Sage, 2010. Some rights reserved under creative commons license.Thu, 23 Oct 2014 10:56:20 +0200load data file to draw surfacehttps://ask.sagemath.org/question/24589/load-data-file-to-draw-surface/ I have a matrix consisting of 512 rows and 512 columns. I have written this matrix down into a text file. Each cell of the matrix contains a positive value. I want to plot these values in 3 dimensional system to form a surface by uploading the text file. How to do it in sage ?
Thank youAvijitThu, 23 Oct 2014 10:56:20 +0200https://ask.sagemath.org/question/24589/How to output data to a filehttps://ask.sagemath.org/question/9703/how-to-output-data-to-a-file/Here is my code that graphs a function:
z1=2*pi*650*10^6
p1=2*pi*1.95*10^9
p2=2*pi*5*10^9
adc=.667
deltaF=.1*10^9
N=(adc*p1*p2)/z1
M(freq)=(2*i*pi*freq+z1)/((2*i*pi*freq+p1)*(2*i*pi*freq+p2))
Z=abs(N*M(freq))
g(freq)=20*log(Z,10)
pts=[(freq,g(freq).n()) for freq in srange(10^8,10^11,deltaF)]
list_plot(pts, plotjoined=True, scale='semilogx', gridlines="minor", ymin=-25, ymax=5)
How do I output this data to a file so I can compare it to data generated by another piece of software?
gjmFri, 11 Jan 2013 11:52:02 +0100https://ask.sagemath.org/question/9703/