SDS_preprocess reference shoreline numpy error

[climeyG]

When I run the reference shoreline process, I end up with the error: AttributeError: module 'numpy' has no attribute 'math'. Assistance will be appreciated.

[thekester]

Hello, you could add import math on SDS_preprocess.py and replace phi = np.pi/2 - np.math.atan2(deltax, deltay) by phi = np.pi/2 - math.atan2(deltax, deltay)

[climeyG]

Thanks. That sorts it out. Is it indicative of an install issue on my side?

[thekester]

Since numpy doesn't often have an attribute called "math," I'm honestly not sure why np.math works for me. It's a mystery of Python!

[kvos]

numpy released version 2.0 a few weeks ago, that's probably what's causing the issue. Will check what has changed and adjust the toolbox.

[kvos]

@climeyG can you please check which version of numpy you are running.
In Anaconda Prompt type:
conda activate coastsat
conda list numpy

[climeyG]

version 2.0.0

[kvos]

yep that makes sense. can you check where np.math.atan2 has ended in numpy 2.0.0?

[climeyG]

Hi Kilian Sorry, you're dealing with someone with no coding background, bumbling along. How would I do that? I can trace this back to the _init_.py module, but that's as far as my limited knowledge goes. Gerard

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On Fri, 12 Jul 2024 at 04:32, Kilian Vos ***@***.***> wrote: yep that makes sense. can you check where np.math.atan2 has ended in numpy 2.0.0? — Reply to this email directly, view it on GitHub <#515 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AUX4A2K5WFU67SIUGOMXZ63ZL455TAVCNFSM6AAAAABKSQK4FKVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDEMRUGMYTIMRXG4> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[climeyG]

[image: image.png]

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On Fri, 12 Jul 2024 at 08:09, Gerard van Weele ***@***.***> wrote: Hi Kilian Sorry, you're dealing with someone with no coding background, bumbling along. How would I do that? I can trace this back to the _init_.py module, but that's as far as my limited knowledge goes. Gerard On Fri, 12 Jul 2024 at 04:32, Kilian Vos ***@***.***> wrote: > yep that makes sense. can you check where np.math.atan2 has ended in > numpy 2.0.0? > > — > Reply to this email directly, view it on GitHub > <#515 (comment)>, > or unsubscribe > <https://github.com/notifications/unsubscribe-auth/AUX4A2K5WFU67SIUGOMXZ63ZL455TAVCNFSM6AAAAABKSQK4FKVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDEMRUGMYTIMRXG4> > . > You are receiving this because you were mentioned.Message ID: > ***@***.***> >

[thekester]

Hello, i check where np.math.atan2 has ended in numpy 2.0.0 with that AI generated code

#import math
import numpy as np

Scalar values

x = 3
y = 4

Using math.atan2 via np.math

result_scalar = np.math.atan2(y, x)
print("Result for scalars with np.math.atan2:", result_scalar)

Array values

x_array = np.array([3, 1, -1, -3])
y_array = np.array([4, 2, -2, -4])

Using numpy.arctan2 for arrays

result_array = np.arctan2(y_array, x_array)
print("Result for arrays with np.arctan2:", result_array)

When i try to execute the code, i got:

DeprecationWarning: np.math is a deprecated alias for the standard library math module (Deprecated Numpy 1.25). Replace usages of np.math with math

By the way, if you try np.atan2 you got an AttributeError.

File "C:\Users\Avenel\AppData\Local\Programs\Python\Python312\Lib\site-packages\numpy_init_.py", line 347, in getattr
raise AttributeError("module {!r} has no attribute "
AttributeError: module 'numpy' has no attribute 'atan2'. Did you mean: 'arctan2'?

To conclude, if x and y are scalar values you should use math.atan2(x,y) but if x and y are arrays you should use np.arctan2(x,y).

Hope this will help.

[thekester]

When i execute the script i got the following error Traceback (most recent call last):
File "/home/athena/Document/coastsatv2/CoastSat-master/CoastSat-master/example.py", line 108, in
settings['reference_shoreline'] = SDS_preprocess.get_reference_sl(metadata, settings)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/athena/Document/coastsatv2/CoastSat-master/CoastSat-master/coastsat/SDS_preprocess.py", line 942, in get_reference_sl
phi = np.pi/2 - np.math.atan2(deltax, deltay)
^^^^^^^
File "/home/athena/miniconda3/envs/coastsat/lib/python3.12/site-packages/numpy/init.py", line 410, in getattr
raise AttributeError("module {!r} has no attribute "
AttributeError: module 'numpy' has no attribute 'math'. Did you mean: 'emath'?
Type of deltax
<class 'numpy.float64'>
Type of deltay
<class 'numpy.float64'>
phi = np.pi/2 - np.arctan2(deltax, deltay) solve the numpy error in SDS_preprocess reference shoreline