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I AM USING JUPYTER NOTEBOK IN UBUNTU 22.04.
I AM UNABLE TO IMPORT CV PACKAGE EVEN THOUGHI HAVE INSTALLED THE PACKAGE TO THE EVIRONMET.
I HAVE TRIED MANY THINGS ON WEB BUT IT IS ALWAYS SHOWING MODULE NOT FOUND ERROR.
IF ANY ONE HAVE SOLUTION FOR THIS PLEASE HELP ME.
I HAD TRIED INSTALLING FROM NOTEBOOK , IT SHOWS REQUIREMENTS ALREADY SATISFIED.
I am using FEniCS on mac trough Docker but I have a problem visualizing the result of an analysis using a Paraview version installed on mac. These are the steps I follow:
I obtain the solution of my problem using FEniCS; then send the .vtu file that FEniCS has generated from Docker to the desktop using
sudo docker cp fenics-container:/home/fenics/shared/nameoffile.vtu Users/User/Desktop
Subsequently, I open ParaView (which I directly installed on my mac and not on Docker) and open the file nameoffile.vtu. I press Apply and then an error appears:
ERROR: In /Users/kitware/dashboards/buildbot-slave/a64f5607/build/superbuild/paraview/src/VTK/IO/XML/vtkXMLUnstructuredDataReader.cxx, line 649
vtkXMLUnstructuredGridReader (0x7fc30ff7c440): Error reading cell offsets: Unsupported array type: vtkUnsignedIntArray
Can anyone explain what this error means?
when I tried open the file using Paraview on a Linux machine it worked just fine with no error. Am I missing some compatibility package?
Solved.
I installed a previous version of ParaView. Apparently latest ones are not fully compatible with all versions of FEniCS
After installing and building opencv 4.0 with this script, I import opencv with python and checked the version. It prints 3.2.0 instead of 4.0.0
I also found a few others with the same problem here. The answer is to export PYTHONPATH=$PYTHONPATH:${OpenCV DIR}/release/python
I'm not to familiar with using Python paths but I assume the correct statement to use is export PYTHONPATH=$PYTHONPATH:${opencv-4.0.0}/release/python_loader and reload bashrc. Is this the right way to load the recently installed opencv for python?
Here is what my directory looks like
https://i.imgur.com/z3nBd9S.png
export PYTHONPATH=~/opencv/opencv-4.0.0/release/lib/python3
I used the following tutorial to install macports and opencv:
http://www.jeffreythompson.org/blog/2012/09/21/installing-opencv-for-python-on-mac-lion/
It works in that after typing "python" I can call "import cv" without errors.
My first question: how do I get this to work with IDLE. I think the issue is via the terminal I'm using Python 2.7.5. IDLE is using Python 2.7.3. If this is the problem, what is the easiest way to fix this.
My second question: how do I get opencv to work in eclipse with pydev? I can't really find much helpful information. I have installed opencv via macports. But I can't get Eclipse to recognize that opencv has been installed. "Import cv" command says no module named cv exists.
I was struggling with this problem today. Here are the steps I followed using macports
Install macports and xcode
Follow Sam Khans post listed here to install python, relink it in your terminal and then install OpenCV:
http://samkhan13.wordpress.com/2012/06/18/using-opencv-with-python-on-your-mac-os-x/
NOTE: At this point you should be able to enter a terminal session and type "python" and then "import cv2" successfully.
Open eclipse and click on "eclipse" then "preferences" in the bar menu at the top of the program.
In the pop-up that appears click the arrow next to "pydev" to expand the menu then click "Interpreter - Python"
Press the "new" button on the right of the window
In the pop-up type in the name for this interpreter (I did python27 for my python2.7 version)
Next link the python executable for the desired version under the macports install tree "/opt/local/bin/pythonX.X" where X.X is your version (i.e. 2.7) and click ok.
A list of the available python libraries should populate. Select only those under the macport install tree (so we don't confuse our interpreter and cross list with another python build)
Finally click OK (which should automatically apply the changes).
The window will compile the interpreter and VOILA Python, Numpy and OpenCV working together through pydev in eclipse.
this is my first question to post.
I am working with python at the moment (on mac os 10.6.8), and have struggled for the lack of an ide. I have been using a version of emacs that offers syntax highlighting, but does not offer the ability to browse variable values without print statements. What I was looking for was the equivalent of eclipse, which basically died on my machine when I upgraded from 10.4.11 to 10.6.8. I've not been successful resurrecting it. Time to move on.
My graduate advisor suggested spyder, and last night I bit the bullet, installing macports and (apparently) spyder, successfully.
The problem I'm having is HOW do I start spyder once installed. Apparently, python spyder.py is not the approach to use. Elsewhere (not here) I saw a post that suggested that there was supposed to be a batch executable that I should be able to find by typing
which spyder
This yielded nothing.
The spyder documentation (located at http://packages.python.org/spyder/options.html) suggests that the command
python spyder.py
is the way to go. Here is the result:
Bobs-Machine:spyderlib robertlilly$ python spyder.py
Traceback (most recent call last):
File "spyder.py", line 31, in
from spyderlib import qt #analysis:ignore
ImportError: No module named spyderlib
Most of my searches here have just pointed out that one should use MacPorts for the install, nothing after that. The readme included the macports spyder install, I thought, didn't provide sufficient direction.
If anybody knows where to look, that would be great.
Regards,
Robert
For me, I installed the macports package py37-spyder. In /opt/local/bin there is the package there, spyder-3.7. Launching that works already. In order to make that the default, I have to run
sudo port select --set spyder spyder-37
Then I can run it directly as
spyder from Terminal. If you want to see which versions of spyder are available on your system, then
port select --list spyder
will tell you the versions you have.
Macports should install a spyder binary to /opt/local/bin/spyder, or thereabouts. If you already have /opt/local/bin/ in your PATH variable, then just run:
$ spyder &
Or more explicitly:
$ /opt/local/bin/spyder &
...if you don't have the PATH setup. Hope that helps.
I just recently installed spyder via MacPorts.
(the command I chose was sudo port install py27-spyder, which installed Spyder v.2.2.3 on Mac OS 10.7.5 & Python 2.7.5)
At the end of the Spyder installation, the terminal showed "use command spyder to launch" (or something to that effect)
So, for me, I simply had to type spyder into a terminal to launch it. Your error referring to missing spyderlib might mean that your spyder installation did not in fact complete properly. (I have found it's not uncommon to have to track down 2-3 weird bugs and dependencies for complex MacPorts installs).
If you find it did complete properly, then perhaps the MacPorts directory was not added to your PATH. It you open ~/.profile, you should seen that MacPorts added it's directory to the shell's search path. Here's what the MacPorts installer added to my .profile:
# MacPorts Installer addition on 2012-11-19_at_17:16:31: adding an appropriate PATH variable fo$
export PATH=/opt/local/bin:/opt/local/sbin:$PATH
# Finished adapting your PATH environment variable for use with MacPorts.
To make a Mac OS-friendly icon to launch Spyder, I then made a new text file (I did it with Terminal.app>pico) containing the following text:
#!/bin/bash
spyder
and saved the file as spyder.command. This file is now double-clickable and will launch Spyder (and an alias to it can have a more normal name like "Launch Spyder"). Throw it into the /Applications folder & make an Icon for it via /Utilities/Icon Composer.app (grab the Spyder icon on the website) and it's like a Pythonic Matlab!