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I am trying to install matplotlib in a new virtualenv.
When I do:
pip install matplotlib or
pip install http://sourceforge.net/projects/matplotlib/files/matplotlib/matplotlib-1.1.0/matplotlib-1.1.0.tar.gz I get this error:
building 'matplotlib._png' extension gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -fPIC - DPY_ARRAY_UNIQUE_SYMBOL=MPL_ARRAY_API -DPYCXX_ISO_CPP_LIB=1 -I/usr/local/include -I/usr/include -I. -I/home/sam/django-projects/datazone/local/lib/python2.7/site-packages/numpy/core/include -I. -I/usr/include/python2.7 -c src/_png.cpp -o build/temp.linux-x86_64-2.7/src/_png.o src/_png.cpp:10:20: fatal error: png.h: No such file or directory compilation terminated. error: command 'gcc' failed with exit status 1 Anyone have an idea what is going on?
Any help much appreciated.
370
Matplotlib is an open-source python library that can be installed using python packages like pip and conda on different operating systems like Windows, Linux, and macOS.
Traditionally, your default Python was installed system-wide (also known as a global install), typically using an installer. But this meant that all Python dependencies would be installed centrally in the site-packages directory.
The Python "ModuleNotFoundError: No module named 'matplotlib'" occurs when we forget to install the matplotlib module before importing it or install it in an incorrect environment. To solve the error, install the module by running the pip install matplotlib command.
Occasionally, problems with Matplotlib can be solved with a clean installation of the package. In order to fully remove an installed Matplotlib: Delete the caches from your Matplotlib configuration directory. Delete any Matplotlib directories or eggs from your installation directory.
Building Matplotlib requires libpng (and freetype, as well) which isn't a python library, so pip doesn't handle installing it (or freetype).
You'll need to install something along the lines of libpng-devel and freetype-devel (or whatever the equivalent is for your OS).
See the building requirements/instructions for matplotlib.
62
To generate graph in png format you need to Install following dependent packages
sudo apt-get install libpng-dev sudo apt-get install libfreetype6-dev Ubuntu https://apps.ubuntu.com/cat/applications/libpng12-0/ or using following command
sudo apt-get install libpng12-0 If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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