I found gnuplot's 3d figure not very attractive.
Is there a way to product a figure looks like this one:
The key points are:
1) less density of x and y tics
2) grids
3) tics bars toward outside the figure.
Here is what I have tried (dowwnload the script here: https://dl.dropboxusercontent.com/u/45318932/gnuplot2.plt):
I know how to manually set x/y tics but I do not want to as it is not a general solution. Unless you can set x and y tics dynamics according to your data.
Can you help me finish the second figure in the style of the first one (matlab)?
This is the best I can get, using gnuplot:
The code is here: https://github.com/mleoking/JavaGnuplotHybrid/blob/master/JavaGnuplotHybrid/src/org/leores/plot/JGnuplotDemo.java
Related
I have created the following 3-D barplot:
enter image description here
Now I want to reverse the order of the axis labeled 1 to 5. The reverse function does not work. If I say reverse Y then it reverses the axis labeled 10 to 50 and with Z it reverses the up-down direction.
And I cannot tackle the axis of interest specifically at least I have not yet figured out how to and I am trying since quite a while.
Does anyone know how to handle such a problem specifically in a 3D barplot?
Thank you very much
yannick
I am working with a data stream and for different time points in this stream I have density estimates over a fixed set of X values.
Each of these sets of estimates would look something like this
I'd like to plot multiple curves like this sideways, similar to how it's done in this answer
I've looked through the documentation regarding plotting but didn't find a straight-forward solution for it.
While it's easy to turn such a plot sideways by simply switching the axes, I didn't find a possibility to offset this from the Y-axis
Does anyone have an idea how to tackle this?
Instead of plotting
plot(x,y)
plot
plot(k+y,x)
where k is the location of the plot along the x axis (2 or 4 in your example).
I am currently trying to use spectral-methods to analyse topographic landscapes.
When i FFT the landscape and plot the power-spectrum. From the power-spectrum an orientation of the structures in the landscape can be found.
2D power-spectrum:-
In this power-spectrum, i would like to make a cross-section.
This is easy when the peak amplitude orientation is along the x or y-axis.
But for this area (and others), this is not the case.
Cross-section from another area - orientated along the y-axis:-
My problem is i want to make a cross-section along the peaks in 1, and i just cant seem to figure it out how.
If anyone could point me towards some solution for this. Been stuck here for a couple of days now.
Edit 1
I would like the cross-section, to be a line along the peak orientation.
Edit 2
Improved the first image to show where i want my cross-section
My solution was, as GameOfThrows suggested:
Pick 2 (or more) points on the orientation i want
used Least squares on the points to create the line
Setup a meshgrid for the interpolation.
Use the interp2 function on the new line.
define a proper axis for the section
In my final cross section i ended up having multiple lines in it, that way i was sure to hit the max amplitudes.
i was a little with the answer to my question, but i have been busy :)
You can use ginput built-in matlab function to store 2 (x,y) coordinates of your power spectrum and then use this values to delimit a profile to be interpolated.
Do you know a simple way to draw arbitrary splines or lines in a plot-figure? I've got the following figure which I created in powerpoint with more or less arbitrary spline-curve (blue) but I'd like to do the same in MATLAB now because of a better look in the final plot-output.
I'm now wondering if I've got to manually "find" data-values to draw some sort of spline (which looks roughly like the blue one below) myself or if there's maybe a tool where I can simply insert some points into a plot interactively and there's a curve fitted though it to create something similar!?
The green and red lines I can figure out myself (probably also have to plot them manually, do I)?!?
Thanks in advance!
EDIT
Okay I found a way myself doing it in MATLAB to gnerate a nice spline: Use splinetool, then either use an example or import some data and then you can interactively add and delete points until your spline looks roughly like it should. Then file->print to figure and then tools->edit plot! You can then delete everything you don't need, add title, xlabel and ylabel etc. and then export it to latex with e.g. matlab2tikz :-) Very nice stuff!!
According the purpose, print nice plots for the thesis, I have some out-of-Matlab recommendations.
1) plot everything as usual, you get a figure handle and an axes handle
h = figure( ... )
a = gca
2) use the data cursor function of the figure window and interactively insert the base points for your later splines. You can additional points by right-click.
t = linspace(0,2*pi,1000);
[x y] = deal(sin(t),cos(t))
Later you delete the "visual" part of the data tip inside Illustrator/Inkscape, if you just want to keep the anchor point of the vector graphic to snap your splines.
There is also the possibility of custom data tips: Tutorial at Matlab Central
3) I once wrote a function to nicely plot Matlab figures as vector graphic based PDFs. You can specify height, width and how much white margin around you want. You just need to pass figure and axes handle and the name:
function saveFigure( fig_handle, axes_handle, name , height , width , margin)
set(axes_handle,'LooseInset',get(gca,'TightInset'));
set(fig_handle, 'Units','centimeters','PaperUnits','centimeters')
% the last two parameters of 'Position' define the figure size
set(fig_handle,'Position',[-margin -margin width height],...
'PaperPosition',[0 0 width+margin height+margin],...
'PaperSize',[width+margin height+margin],...
'PaperPositionMode','auto',...
'InvertHardcopy', 'on',...
'Renderer','painters'... %recommended if there are no alphamaps
);
saveas(fig_handle,name,'pdf')
end
4) You get a PDF you could directly use for Latex - for use in MS Office use 'emf' (
Enhanced metafile) rather than 'pdf'. Open this file with Adobe Illustrator (preferable as it offers layers) or Inkskape (Open Source).
5) The datatips are recognized as graphical objects, you can catch them and draw a spline on them. For Illustrator I'd recommend to put the spline in another layer than the actual figure. Later you can just swap the figure and give the spline new anchor points. In Inkscape you could use the grouping function to keep everything together.
6) I'd say you save a lot of time over a only-Matlab-solution. Good look!
For the function z= 10+pow((x-2),2)+pow((y+5),2), I want to represent in a 3D plot every value of z for each (x,y) pair , with a display delay before each new value of z (like a moving point).
The values for x,y are read from files.
I tried to modify Jacobs code from Creating a point moving along a graph in MATLAB, but I couldn't get it to work for my 2 variable function.
I would like a general solution, because I will also need this plotting for a N-variable function.
Have a look at the following question and see if it answers yours:
animate plot / trajectory in matlab / octave