| Summary: | IPython command raises error in jupyter notebooks | ||
|---|---|---|---|
| Product: | [Applications] LabPlot2 | Reporter: | YOYOWORKOUT <yoyo.work.out> |
| Component: | general | Assignee: | Alexander Semke <alexander.semke> |
| Status: | RESOLVED FIXED | ||
| Severity: | minor | ||
| Priority: | NOR | ||
| Version First Reported In: | 2.10.0 | ||
| Target Milestone: | --- | ||
| Platform: | Neon | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Sentry Crash Report: | |||
| Attachments: | picture of the SyntaxError (in virtualenvironment) | ||
(In reply to YOYOWORKOUT from comment #0) > Created attachment 159068 [details] > picture of the SyntaxError (in virtualenvironment) > > SUMMARY > *** > When using matplotlib and ipython installed both in virtual environment by > disto repos, the command %matplotlib inline raises "SyntaxError: invalid > syntax " > *** > > > STEPS TO REPRODUCE > 1. install dependencies : apt install -y > python3-{matplotlib,numpy,notebook,ipykernel} > 2. create a LabPlot project, add new notebook in it > 3. import numpy, matplotlib : is ok > 4. in a command cell : insert '%matplotlib inline' > > OBSERVED RESULT > File "/home/yoyo/Downloads/PyDataScience.lml", line 1 > %matplotlib inline > ^ > SyntaxError: invalid syntax This 'inline' command is from ipython. In Cantor you don't need to use it, we rely on python only. With the option "Plot Integration" you can control where the produce plot result is opened in the external viewer used by matplotlib, etc. or embedded into Cantor's notebook. The following example should work: import matplotlib.pyplot as plt import numpy as np t = np.arange(0,2*np.pi, 0.1) x = 16*np.sin(t)**3 y = 13*np.cos(t)-5*np.cos(2*t)-2*np.cos(3*t)-np.cos(4*t) plt.plot(x,y) plt.show() I just tried it and saw the produce plot is not properly embedded if the plot integration option is activated :-( But this must be a different problem. Please give it a try without any ipython specific keywords. The problem with not showing plot results in Python was fixed recently in Cantor that is being used in LabPlot for the notebook interface. As discussed in the Matrix chat, you don't need to use that "inline" command. Just specify in the application settings whether you want the plot results to be integrated/embedded into the notebook or to be shown in an external window. A minimal example for a working matplotlib session: import matplotlib.pyplot as plt plt.plot([1,2,3]) plt.show() Just try it out with and without integrating the plots option in the settings to see how it works in LabPlot. You'll need a newer version of Cantor (current nightly build or 23.12 to be released later). |
Created attachment 159068 [details] picture of the SyntaxError (in virtualenvironment) SUMMARY *** When using matplotlib and ipython installed both in virtual environment by disto repos, the command %matplotlib inline raises "SyntaxError: invalid syntax " *** STEPS TO REPRODUCE 1. install dependencies : apt install -y python3-{matplotlib,numpy,notebook,ipykernel} 2. create a LabPlot project, add new notebook in it 3. import numpy, matplotlib : is ok 4. in a command cell : insert '%matplotlib inline' OBSERVED RESULT File "/home/yoyo/Downloads/PyDataScience.lml", line 1 %matplotlib inline ^ SyntaxError: invalid syntax EXPECTED RESULT nothing , being abble to see matplotlib.pyplot.plot( x, y) in the notebook note : using plot.show()without trying to inline the matplotlib figure indeed does show the outside window with plot SOFTWARE/OS VERSIONS Linux/KDE Plasma: KDE Neon 5.27 (available in About System) KDE Plasma Version: 5.27.5 KDE Frameworks Version: 5.106.0 Qt Version: 5.15.9 ADDITIONAL INFORMATION In options , for CAS Python backend , I left the defaults : matplotlib as drawing lib , both plot integration and variable management enabled. Deed I miss something not being in the help book ?