astropy | Astronomy and astrophysics core library | Dataset library

 by   astropy Python Version: 6.1.0rc1 License: BSD-3-Clause

kandi X-RAY | astropy Summary

kandi X-RAY | astropy Summary

astropy is a Python library typically used in Artificial Intelligence, Dataset applications. astropy has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has medium support. You can install using 'pip install astropy' or download it from GitHub, PyPI.

Astronomy and astrophysics core library
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            kandi-support Support

              astropy has a medium active ecosystem.
              It has 3814 star(s) with 1603 fork(s). There are 139 watchers for this library.
              There were 5 major release(s) in the last 6 months.
              There are 1213 open issues and 4387 have been closed. On average issues are closed in 128 days. There are 51 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of astropy is 6.1.0rc1

            kandi-Quality Quality

              astropy has 0 bugs and 0 code smells.

            kandi-Security Security

              astropy has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              astropy code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              astropy is licensed under the BSD-3-Clause License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              astropy releases are available to install and integrate.
              Deployable package is available in PyPI.
              Build file is available. You can build the component from source.
              It has 164072 lines of code, 12939 functions and 825 files.
              It has high code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed astropy and discovered the below as its top functions. This is intended to give you an instant insight into astropy implemented functionality, and help decide if they suit your requirements.
            • Update header data .
            • Convolve a 2 - dimensional array using convolution .
            • Convert world coordinates to pixel coordinates .
            • Parse the grammar rules .
            • Returns the components of the WCS object .
            • Convolve an array using kernel .
            • Mark a deprecated argument as deprecated .
            • Calculate a poisson confidence interval .
            • Calculate the z - value of a function .
            • Decorator for support .
            Get all kandi verified functions for this library.

            astropy Key Features

            No Key Features are available at this moment for astropy.

            astropy Examples and Code Snippets

            CDFlib,CDF Astropy Epochs
            Pythondot img1Lines of Code : 3dot img1License : Permissive (MIT)
            copy iconCopy
            import cdflib
            
            cdf_file = cdflib.cdfastropy.compute_epoch([2017,1,1,1,1,1,111])
              
            store values and continue running function
            Pythondot img2Lines of Code : 5dot img2License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
                if PlotStars:
                    # ... code ...
                if store:
                    return positions
            
            No such file or directory: '/opt/anaconda3/lib/python3.8/site-packages/rtree/lib'
            Pythondot img3Lines of Code : 4dot img3License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            python is /opt/anaconda3/bin/python
            python is /usr/local/bin/python
            python is /usr/bin/python
            
            5-digit-year in date export (52164-01-19 00:00:00+00)
            Pythondot img4Lines of Code : 33dot img4License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            import datetime
            import re
            
            import astropy.time as astropy_time  # installed with PIP
            
            
            faulty_data = "52164-01-19 00:00:00+00"
            timeformat = re.compile(r"(?P\d{5})-(?P\d{2})-(?P\d{2}) (?P\d{2}):(?P\d{2}):(?P\d{2})(?P[+\- ])(?P\d{2})")
            
            matc
            How to resize a column in a astropy.io.fits BinTableHDU
            Pythondot img5Lines of Code : 6dot img5License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            hdul = fits.open('test.fits')
            table = Table(hdul[1].data)
            table.replace_column('test', [27, 27])
            hdul[1] = fits.BinTableHDU(table)
            hdul.writeto('new_test.fits', overwrite=True)
            
            Undo Table Conversion with Astropy
            Pythondot img6Lines of Code : 5dot img6License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            from astropy.io import fits
            with fits.open('data.fits') as hdus:
                hdu1 = hdus[1].data
            raw = hdu1._get_raw_data()
            
            How to create a progress bar for iterations happening within installed modules
            Pythondot img7Lines of Code : 6dot img7License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            class tqdm_array(np.ndarray):
                def __iter__(self):
                    return iter(tqdm.tqdm(np.asarray(self)))
            
            labels = np.array(segm_image.labels).view(tqdm_array)
            
            How to install Astropy 5.0 using pip?
            Pythondot img8Lines of Code : 2dot img8License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            pip 21.3.1 from /opt/conda/lib/python3.7/site-packages/pip (python 3.7)
            
            Plot a FITS image with changed axes
            Pythondot img9Lines of Code : 4dot img9License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            from matplotlib.colors import LogNorm
            
            plt.imshow(image_data, cmap='gray', norm=LogNorm())
            
            Issue in Python version after installing PySpark
            Pythondot img10Lines of Code : 4dot img10License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            echo "export SPARK_HOME=/opt/spark" >> ~/.profile
            echo "export PATH=$PATH:$SPARK_HOME/bin:$SPARK_HOME/sbin" >> ~/.profile
            echo "export PYSPARK_PYTHON=/usr/bin/python3" >> ~/.profile
            

            Community Discussions

            QUESTION

            store values and continue running function
            Asked 2022-Apr-03 at 13:27

            I am using astropy to detect sources in an image. I am trying to write a function that will detect my sources, with an option of storing their coordinates in an array, and another option to plot the sources. This is my code:

            ...

            ANSWER

            Answered 2022-Apr-03 at 13:27

            Simple change order - first PlotStars, next store

            Source https://stackoverflow.com/questions/71725278

            QUESTION

            How to block the hypothesis pytest plugin
            Asked 2022-Mar-13 at 21:29

            According to the pytest documentation, I can block a plugin using -p no:name. I confirmed that this works for other plugins. However, when I try this with hypothesis it has no effect:

            ...

            ANSWER

            Answered 2022-Mar-12 at 20:32

            The officially supported option is to use settings profiles to globally enable settings(database=None).

            Alternatively, you could -p no:hypothesispytest, but note that this is not a documented and supported approach - it may be changed to the more obvious -p no:hypothesis, for example.

            Source https://stackoverflow.com/questions/71394400

            QUESTION

            No such file or directory: '/opt/anaconda3/lib/python3.8/site-packages/rtree/lib'
            Asked 2022-Mar-13 at 16:13

            I am trying to build an app from a python file (Mac OS) using the py2app extension. I have a folder with the python file and the "setup.py" file.

            • I first tested the app by running python setup.py py2app -A in the terminal and the dist and build folder are successfully created and the app works when launched.
            • Now when I try to build it non-locally by running the command python setup.py py2app in the terminal, there are various "WARNING: ImportERROR" messages while building and finally a error: [Errno 2] No such file or directory: '/opt/anaconda3/lib/python3.8/site-packages/rtree/lib' error.

              How can I fix this? I've tried to delete anaconda fully as I don't use it but it seems to still want to run through it. Additionally, I have tried to run the build command using a virtual environment but I end up having even more import errors.
              *I Left out a lot of the "skipping" and "warning" lines using "..." for space
            ...

            ANSWER

            Answered 2022-Mar-13 at 16:13

            The error error: [Errno 2] No such file or directory: '/opt/anaconda3/lib/python3.8/site-packages/rtree/lib' was caused by py2app trying to build the program bundle using a non-existent interpreter. This means that even if you try to uninstall a manager like Anaconda, it still has option logs somewhere on your mac.

            The fix:

            1. Open the terminal and type the command type -a python.
            • You will see similar lines

            Source https://stackoverflow.com/questions/71414043

            QUESTION

            Satellite velocity from km/s to arcsec
            Asked 2022-Mar-13 at 15:59

            I can't change the current satellite velocity from km/s units to arcsec units. This is a snippet of my code:

            ...

            ANSWER

            Answered 2022-Mar-13 at 15:59

            The method you're using frame_latlon_and_rates already returns latitudinal and longitudinal angular velocities which you're ignoring.

            Source https://stackoverflow.com/questions/71430303

            QUESTION

            How to display a 16 bit colour FITS image using python
            Asked 2022-Mar-07 at 18:55

            I want to display a FITS image in python. I have all this working using astropy (the FITS loader) and matplotlib and a greyscale image. However I have images that are 16 bit colour with a Bayer matrix of RGGB and I don't know how to display this as an RGB colour image.

            This works for a greyscale image:

            ...

            ANSWER

            Answered 2022-Mar-07 at 18:55

            The answer was to use OpenCV to debayer the image and then normalise the data.

            Source https://stackoverflow.com/questions/71372600

            QUESTION

            Networkx - create a multilayer network from two adjacent matrices
            Asked 2022-Feb-02 at 21:29

            I have two adjacent matrices that represent two brain structures (cerebellum and cortex):

            Dataset:

            ...

            ANSWER

            Answered 2022-Jan-21 at 02:14

            Here's a way to do what you want:

            1. First after loading your adjacency matrices to pandas you can convert them to two different graphs with nx.convert_matrix.from_pandas_adjacency
            2. You can then join the two graph into a single graph by using nx.disjoint_union. The nodes of both graphs are basically concatenated onto a single graph (see more here).
            3. Once you have the full graph, you can randomly draw nodes from the cortex part of the full graph with a 0.01 probability.
            4. Similarly you can draw the same number of nodes on the cerebellum part of the graph to act as recipients of the connection.
            5. Finally you can create the edges between the chosen nodes on both sides.
            6. And you can get your adjacency matrix from the final graph by using adj_matrix_full=nx.linalg.graphmatrix.adjacency_matrix(full_g,weight=None)

            See full code below for more details:

            Source https://stackoverflow.com/questions/70795108

            QUESTION

            Networkx - entropy of subgraphs generated from detected communities
            Asked 2022-Feb-02 at 21:27

            I have 4 functions for some statistical calculations in complex networks analysis.

            ...

            ANSWER

            Answered 2022-Jan-26 at 15:38

            It looks like, in calculate_community_modularity, you use greedy_modularity_communities to create a dict, modularity_dict, which maps a node in your graph to a community. If I understand correctly, you can take each subgraph community in modularity_dict and pass it into shannon_entropy to calculate the entropy for that community.

            pseudo code

            this is pseudo code, so there may be some errors. This should convey the principle, though.

            after running calculate_community_modularity, you have a dict like this, where the key is each node, and the value is that which the community belongs to

            Source https://stackoverflow.com/questions/70858169

            QUESTION

            Errors using curve_fit for Guassian fit of data
            Asked 2022-Jan-27 at 17:41

            I'm trying to do a guassian fit for some experimental data but I keep running into error after error. I've followed a few different threads online but either the fit isn't good (it's just a horizontal line) or the code just won't run. I'm following this code from another thread. Below is my code.

            I apologize if my code seems a bit messy. There are some bits from other attempts when I tried making it work. Hence the "astropy" import.

            ...

            ANSWER

            Answered 2022-Jan-27 at 16:34

            There are two problems with your code. The first is that you are performing vector operation on list which gives you the first error in the line mean = sum(wavelengths*intensities)/n. Therefore, you should use np.array instead. The second is that you take math.exp on python list which again throws an error as it takes a real number, so you should use np.exp here instead.

            The following code solves your problem:

            Source https://stackoverflow.com/questions/70881582

            QUESTION

            How to resize a column in a astropy.io.fits BinTableHDU
            Asked 2022-Jan-24 at 15:48

            I'm attempting to resize a column in a FITS BinTableHDU column after it has been created, but I can't seem to find a way to do this in the astropy documentation.

            For example, suppose a simple fits file was created with a BinTableHDU containing a single column of length 3:

            ...

            ANSWER

            Answered 2022-Jan-24 at 15:48
            Easy way to update binary table data with different size in a FITS file

            In the example from the question, only one table column needs to be updated and with a different size. The Table class has a replace_column function to help with this.

            Source https://stackoverflow.com/questions/70829268

            QUESTION

            Undo Table Conversion with Astropy
            Asked 2022-Jan-15 at 15:46

            I have a FITS file with a BinTableHDU that has many entries that have been converted from digital numbers various units like Volts and Currents. I would like to turn off this conversion and access the original digital number value that was stored in the table.

            This table makes use of TTYPE, TSCAL, TZERO, and TUNIT keys in the header to accomplish the conversions. So I could use these header keys to undo the conversion manually.

            ...

            ANSWER

            Answered 2022-Jan-15 at 10:39

            You'll need to be using the direct astropy.io.fits interface instead of the high-level Table interface. From there something like this might work:

            Source https://stackoverflow.com/questions/70717019

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install astropy

            You can install using 'pip install astropy' or download it from GitHub, PyPI.
            You can use astropy like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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            Install
          • PyPI

            pip install astropy

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            https://github.com/astropy/astropy.git

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            gh repo clone astropy/astropy

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            git@github.com:astropy/astropy.git

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