I am using Octave 3.6.4 on Window 7, I am not able to save the 9 plots which are generated using Octave scripts. I am using below commands to save the plots. Though sometime I am able to save the plots but all the saved plots are same which is similar to the last plot generated by the script. Why?
pathfig = [path, '.png'];
print(h, '-dpng', pathfig,'-r100');
saveas(h, pathfig, 'jpg');
Since you are only seemingly saving the last plot you generate, it is safe to say that your variable h is assigned to that last plot.
You will likely need to specify each figure you want to print. For example, to get a handle to the first figure, you could do:
h1 = figure(1);
To get a handle to the second figure:
h2 = figure(2);
And separately use h1, h2, etc. in separate calls to saveas or print. This is how I have done it in the past.
I am able to save the specific figures. The problem is, I was using graphics_toolkit as fltk when I switch to gnuplot then the print command is working properly, but there is issue with saveas command.
Related
Software: Octave v7.1.0
There seems to be no option of defining the page size while doing publish ("FILE", "pdf") . The manual for pdf is: 11.11.1 docs.octave/.../Publish.
It's kinda surprising as it's a one word addition to the output TeX file : a4paper. I can do this manually each time I publish but being able to specify it somehow within the publish function would be awesome.
Surprisingly, there are plenty options for specifying page size in figures and images. Search for papertype at: 15.3.3.2 docs.octave/.../Figure-Properties
I searched with "Matlab" and found this page, and it fetched the results for "Matlab Report Generator" mlreportgen which seems a different thing.
I'd be interested to listen about other ways of doing it automatically too (like adding that word in TeX file via shell scripting and text string manipulation maybe).
As directed by #cris-luengo in the pointer comment to the linked manual, one solution can be to edit (or create) the function files (to used by the publish function) with the desired changes to specify the paper size.
The function files location can be found by:
opening the function file in octave gui and then proceeding from there:
edit (fullfile (fileparts (which ("publish")), "private", "__publish_html_output__.m"))
or, executing the following in octave REPL/command line:
fullfile (fileparts (which ("publish")), "private")
There, among other files, 2 files will be:
__publish_html_output__.m
__publish_latex_output__.m
Edit the _latex_ containing file to add ,a4paper (or other predefined size in latex) alongwith 10pt in the line '\documentclass[10pt]{article}',, optionally with a comment in a proceeding newline as a reminder that you added it, something like: '% Modification: specify a4paper',
If pdf format were directly specified as a new function file, then I'd have preferred to modify its copy and calling that directly in publish(), but since the publish pdf eventually calls publish latex, so, the only option at hand in this method seems to edit the original publish latex function file itself.
I need to share an interactive plot made using the PlotlyJS package in Julia. According to the documentation of the package PlotlyJS.jl, I need to use the "savehtml" function and set "js" argument to ":embed" in order to view it offline (screenshot attached). However, I got an error "UndefVarError: savehtml not defined". Can anyone tell me what may cause this problem?
FYI, the "savefig" function can save the plot into an HTML but the HTML cannot be viewed on other machines.
It is also acceptable if there is another way to save an HTML plot that can be assessed from other machines. The interactive plot is generated by PlotlyJS.jl.
Thanks very much in advance.
This creates a standalone file that can be used on other machines.
However, those other machines need to have access to the internet:
p = PlotlyJS.Plot(sin.(1:0.1:10))
open("f.html","w") do f
PlotlyJS.PlotlyBase.to_html(f, p; include_plotlyjs="cdn", full_html=true)
end
I just checked that this is as far as you can do as of today (version v0.8.18) as there is a bug in the source code of PlotlyBase.
I am taking a class on using Octave for machine learning algorithms, and as part of the assignments, they provide a series of .m files to build upon with our own code as well as to run for submission credit through the auto-grader. My problem is that the .m files load perfectly fine in a regular text editor program like Atom or Notepad, but in Octave, the files are best described as nonsense, and thus will not run in the console. If I open the files in a regular editor and copy/paste over the crazy into Octave, it seems to save it and reopen fine. But, I have close to 20 files for the first project alone, and this solution is untenable in the long run. I have a screenshot of how it's loading. Is there some setting I need to change? Uninstall/reinstall Octave? I'm new to Octave and the Octave GUI, and I'm striking out with Google for a solution. I am using version 6.2.0. Thank you for any help/advice!
screenshot of how octave is loading my .m files
Update: I responded to this in a comment below, but I tried loading it another way into Octave GUI and received the following error: ">> error: load: unable to determine file format of 'C:/Users/sophi/documents/octave/assignment_1/computeCost.m" This tracks for me because it makes sense why it would open the files in such a weird way. It's simply not sure what they are. However, I created my own simple functions from scratch to test, saved them as .m files, and was able to run them perfectly fine. I'm including one of the files below. Maybe there's a key in the formatting of the files offered by the class which is impacting Octave's ability to process it correctly?
function plotData(x, y)
%PLOTDATA Plots the data points x and y into a new figure
% PLOTDATA(x,y) plots the data points and gives the figure axes labels of
% population and profit.
figure; % open a new figure window
% ====================== YOUR CODE HERE ======================
% Instructions: .... goes on about assignment
% ============================================================
end
MOST RECENT UPDATE: The plot thickens. Yesterday, I was able to open the files I created and run them in the Octave environment, and I (wrongly) assumed they would still work today. They are doing the same stupid thing as the files included by the course. I checked inside preferences for the editor, and it says it is loading and saving them as IBM273 if that helps. Thank you for everyone has pitched in ideas. I really appreciate it!
It was 100% the encoding. I thought it was strange it was saving/loading in IBM273, so I switched it to UTF-8. Almost all the files are working now. The only ones that aren't are the ones I was trying to copy/paste yesterday to see what was going on with the load problems and the basic new problems I wrote. So I deleted everything, redownloaded, and set the default UTF-8 going forward and voila! Solved! Thanks again!
If you want to open a .m file in octave, Try this solution
It is necessary to declare a current directory before saving a file, loading a file, or running an M-file. By default, unless you edit the Octave shortcut, the current directory will be .../Octave/work. After you start Octave, change the current directory by either using the toolbar at the left-hand side of the screen, or entering the path in the bar at the top.
To open an .m file, you can use file -> open, or type
open filename
Is it possible to make the markers (zeros and poles) from rlocus on Octave?
I've found the following answer, but the file that is supposed to be modified does not seem to be used anymore, or at least I wasn't able to find it with locate on Linux.
https://electronics.stackexchange.com/questions/372728/octave-rlocus-format-ploles-and-zero
This is the code I'm using to generate the plot.
pkg load control;
s = tf ('s');
GH = (s + 1)/(s*(s + 2))
rlocus (GH);
This is the plot generated by the code:
But the poles and zeros are almost invisible on the standard plot.
Thanks in advance for any responses.
From within octave, type
which rlocus
on the terminal.
This will tell you the location of the file in your current octave / control-package installation.
You can then proceed and edit the file as per the instructions of the previous post.
So I was using the neo4jrestclient, and I noticed that in the class of QuerySequece, there's a .to_html()function (https://github.com/versae/neo4j-rest-client/blob/master/neo4jrestclient/query.py)
However, when I try using it I get the 'Unable to display the graph or the table' error.
I haven't found a working example of it. I was wondering if anyone has gotten this working.
Much thanks appreciated.
The function .to_html() is a function that IPython uses in order to render rich content inside Notebooks. When running inside a Notebook, neo4jrestclient asks for extra information to the Neo4j server, so it can draw the actual graph returned. Therefore, if you try to run a query inside an IPython Notebook, a D3 graph should be rendered automatically.
from neo4jrestclient.client import GraphDatabase, Node, Relationship
gdb = GraphDatabase(url="http://localhost:7474")
gdb.query("MATCH (me)-[r]-() RETURN me, r LIMIT 10")
A running example can be seen in this gist. Although it's still a work in progress. I think that I could add an option to populate the needed fields in case you wanted to use the .to_html() outside the IPython Notebook. All you need to do is to make neo4jrestclient believe that it's running inside of one by modifying the function neo4jrestclient.utils.in_ipnb() making it to always return True. Let me know if you would use that feature and I will add it.
On the other hand, I am developing ipython-cypher, to have a better integration of IPython, Pandas, NetworkX, and matplotlib with Neo4j, but it's still in alpha.
Update: Now you can add data_contents=True to return the extra data.
results = gdb.query(query, data_contents=True)
Data will be in results.rows and results.graph.