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Thread: Numpy doesn't work in Spyder 4.1.3
Post: Numpy doesn't work in Spyder 4.1.3
| Hello everyone. I have just istalled Spyder 4.1.3 as defined here using conda install spyder=4.1.3 However, I hace tried to run a code in which numpy has been imported as import numpy as np and the ou... |
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player1681 |
Data Science |
1 |
2,131 |
May-31-2020, 11:43 AM |
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Thread: could not convert string to float
Post: RE: could not convert string to float
| (May-22-2020, 09:41 AM)ibreeden Wrote: As the message says: data is not a float. And also as the message shows: data is a lot of floats. That is the problem. You have to convert the text lines one b... |
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player1681 |
General Coding Help |
4 |
5,834 |
May-22-2020, 09:56 AM |
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Thread: could not convert string to float
Post: could not convert string to float
| After reading a text file, as a column, I want to convert it from string to float; however, an error appears:
with open('posx_mean_no_acoplo_tf_multiple.txt', 'r') as f2:
data = f2.read()
print(... |
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player1681 |
General Coding Help |
4 |
5,834 |
May-22-2020, 09:32 AM |
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Thread: Problem reading data from file
Post: RE: Problem reading data from file
| (May-22-2020, 08:17 AM)ibreeden Wrote: You must not show the (address of) the function, but execute the function by adding ().
print(mediaXoriginal.read())
EDIT: I have found the syntax error. Your ... |
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player1681 |
General Coding Help |
2 |
3,732 |
May-22-2020, 08:57 AM |
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Thread: Problem reading data from file
Post: Problem reading data from file
| I am trying to read a simple colum vector as
mediaXoriginal = open('posx_mean_no_acoplo_tf_multiple.txt', 'r') and then
print(mediaXoriginal.read)However, the resulting output is
Output:<built... |
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player1681 |
General Coding Help |
2 |
3,732 |
May-22-2020, 08:14 AM |
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Thread: scipy interp2d doesn't work
Post: RE: scipy interp2d doesn't work
| (Feb-05-2020, 01:06 AM)scidam Wrote: Loops are slow in Python, so I need to clarify, does it hang when you call interp2d, or it hangs when you fill your arrays positionX and positionY?
(Feb-05-2020... |
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player1681 |
Data Science |
4 |
4,463 |
Feb-05-2020, 09:50 AM |
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Thread: scipy interp2d doesn't work
Post: RE: scipy interp2d doesn't work
| (Feb-04-2020, 08:43 AM)player1681 Wrote: Hello everybody. I have a .txt file in which a grid of X and Y points and values of f(X, Y) in said grid are constructed as columns. I am trying to program t... |
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player1681 |
Data Science |
4 |
4,463 |
Feb-05-2020, 08:23 AM |
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Thread: scipy interp2d doesn't work
Post: scipy interp2d doesn't work
| Hello everybody. I have a .txt file in which a grid of X and Y points and values of f(X, Y) in said grid are constructed as columns. I am trying to program the Shannon Interpolation. For that I need t... |
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player1681 |
Data Science |
4 |
4,463 |
Feb-04-2020, 08:43 AM |
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Thread: Can I interpolate if I don't know the function I am dealing with?
Post: RE: Can I interpolate if I don't know the function...
| Yes, I think this might be useful. Thank you very much. |
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player1681 |
Data Science |
2 |
1,714 |
Jan-30-2020, 02:41 PM |
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Thread: Can I interpolate if I don't know the function I am dealing with?
Post: Can I interpolate if I don't know the function I a...
| Hello everyone. I am working on the translation of some code from mathematica to python. In one line it is written ifuncEPSX = Interpolation[windXMat //. {x_List} :> x]; here x_List is a matrix of ... |
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player1681 |
Data Science |
2 |
1,714 |
Jan-30-2020, 01:15 PM |
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Thread: Error using min() function on a list
Post: RE: Error using min() function on a list
| (Jan-29-2020, 04:18 PM)ThiefOfTime Wrote: Well the thing is that you probably want to do the max and min over a list of number right?
what you are building there are list of strings. For the max fun... |
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player1681 |
General Coding Help |
2 |
1,703 |
Jan-29-2020, 04:23 PM |
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Thread: Error using min() function on a list
Post: Error using min() function on a list
| Hello everybody.
I am trying to find the max and min values of the first two columns of a matrix. I have written the following code
f = open('XdataTXT.txt','r')
linesX=f.readlines()
X_column_number ... |
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player1681 |
General Coding Help |
2 |
1,703 |
Jan-29-2020, 04:08 PM |
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Thread: Finding out roots of Chebyshev's polynomials
Post: RE: Finding out roots of Chebyshev's polynomials
| I have figured out how to do this. My new code is as follows:
for n in range(10):
nprint(chop(taylor(lambda x: chebyt(n, x), 0, n)))
print(np.roots(chop(taylor(lambda x: chebyt(n, x), 0, n))[... |
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player1681 |
Data Science |
2 |
2,433 |
Dec-02-2019, 01:56 PM |
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Thread: Finding out roots of Chebyshev's polynomials
Post: Finding out roots of Chebyshev's polynomials
| Hello everyone.
I am constructing Chebyshev polinomials as specified here. I have replicated the fisrt part of the code succesfully as:
import numpy as np
import sympy as sp
import mpmath as mp
fr... |
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player1681 |
Data Science |
2 |
2,433 |
Dec-02-2019, 11:48 AM |
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Thread: Can I evaluate a Chebyshev polynomial using a function
Post: Can I evaluate a Chebyshev polynomial using a func...
| Hello everyone. I need to evaluate an arbitrary Chebyshev polynomial of order n at a point x. I have done it manually using their definition as
mt.cos(n*mt.acos(x))However, I am not satisfied by the... |
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player1681 |
Data Science |
1 |
1,986 |
Nov-21-2019, 08:19 AM |
