Logarithm Matlab - Stack Overflow
Apr 1, 2017 · How do take natural log of a double in MATLAB? 7. Matlab: Solving a logarithmic equation. 2. MATLAB ...
Performing linear regression on a log-log (base 10) plot Matlab
However, when I have the data plotted in a log-log scaled graph (both axes in logarithmic scale) the linear fit does not appear to me to be linear. How can I perform a linear regression in a log-log graph with Matlab. I have attached a picture of the graph and the linear fitting that I obtained. Any help is much appreciated! Thank you in advance!
How to produce a log scale FFT with MatLab - Stack Overflow
Dec 3, 2013 · I was wondering if it was possible to take the code I have and transform the x axis to a log-scale representation rather than linear. I understand most of the code, but it is the x axis line of code that I'm still not 100% sure exactly what it is doing apart from the +1 at the end of the line, which is that fact that MatLab's indexing structure ...
How do you do natural logs (e.g. "ln()") with numpy in Python?
Numpy seems to take a cue from MATLAB/Octave and uses log to be "log base e" or ln. Also like MATLAB/Octave, Numpy does not offer a logarithmic function for an arbitrary base. If you find log confusing you can create your own object ln that refers to the numpy.log function: >>> import numpy as np >>> from math import e >>> ln = np.log # assign ...
Compute the log10 of the image in matlab - Stack Overflow
Oct 28, 2016 · Let's use the cameraman.tif image provided by matlab. Img = imread ('cameraman.tif'); This image is a uint8 image (i.e. it can take possible intensity values in the 0-255 range), but in fact this particular image has a minimum intensity value …
Plotting mplot3d / axes3D xyz surface plot with log scale?
The log scaling for Axes in 3D is an ongoing issue in matplotlib. Currently you can only relabel the axes with: ax.yaxis.set_scale('log') This will however not cause the axes to be scaled logarithmic but labeled logarithmic. ax.set_yscale('log') will cause an exception in 3D. See on github issue 209. Therefore you still have to recreate the ...
How to plot very low negative values in Matlab - Stack Overflow
Aug 31, 2017 · I saw this question (Positive & Negitive Log10 Scale Y axis in Matlab), but is there a simpler way? Another issue I have with the semilogy command is that the data are plotted as if they go from November to April, whereas they really go from January to June!
When I set the YScale to log, why do my XTickLabels disappear in …
Aug 11, 2014 · The reason why it isn't working is because when you go to log scale, the y limits cannot be negative. This is a semilog plot, which means that the smallest value of your y axis must be positive. As such, you need to modify your code so that the text values are placed with a y value of at least 1 instead of a negative number.
logfile - How to create a log file in Matlab - Stack Overflow
Jan 3, 2014 · I have inherited multiple scripts in Matlab and sometimes it's tricky to trace where the execution is happening. I would like to create a log file to show where it is in the execution, show warnings and show errors and date and time stamps. [Note: I'm using Matlab R2012a].
plot - Plotting in logarithm scale (Matlab) - Stack Overflow
As Adriaan pointed out you can use loglog() to plot data on a log-log scale. However, going back to the question. I want to plot: (log(x),log(y)), if y>0, and (log(x),-log(-y)), if y<0. I tried to to use these formula, and then simple plot function, but with this …