I just wanted to make a quick image from a "rows x columns" matrix, where the Y axis must be plotted in log scale. I thought it would be simple, but it seems matlab has so much complexity that my approach is not working. FFT from measured data - Scaling y-axis . Learn more about fft, signal processing, digital signal processing, scaling, scale MATLAB A logarithmic scale (or log scale) is a way of displaying numerical data over a very wide range of values in a compact way—typically the largest numbers in the data are hundreds or even thousands of times larger than the smallest numbers.Such a scale is nonlinear: the numbers 10 and 20, and 60 and 70, are not the same distance apart on a log scale. I have a given Matlab figure, but not the original data. I want to set only y-axis as log scale and x-axis as linear? How to do that? I used loglog function but it scales both axis but I want only Y. Best Answer. 2 days ago example. Y = log10 (X) returns the common logarithm of each element in array X .

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Try using axis tight or axis([xmin xmax ymin ymax]) after the ezplot command.. My graph does not fill the whole  semilogx(Y) creates a plot using a base 10 logarithmic scale for the x-axis and a linear scale for the y-axis. It plots the columns of Y versus their index if Y  217 kB — Andra möjligheter är att rita med olika färger och olika plotsymboler, t ex optionen 'o' för små ringar, i stället för en kurva (se hjälpfunktionen till plot). >> axis([-1 32 -​  160 kB — Detta är en handledning till MATLAB, ursprungligen för version 5, men här åtminstone delvis mod- ifierad för version 6.

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This is apparently calculated in the same way, no matter what mode (lin/log) the axis is in. X-axis should be in log scale and Y-axis in dB scale. – Jack Reacher Nov 23 '16 at 2:57 Concerning the validity of your graphs: if you use a simple loudspeaker-microphone setting for your measurements, most of the peaks and valeys are typically determined by your loudspeaker instead of your SM57. I have an assignment in Matlab and one of the instructions in the assignments is to not use "user-defined functions", I don't actually know what that is and I tried to understand it but couldn't, so can someone tell me if my small code has any user-defined functions.

the histogram with log10 x axis looks axis mode sets whether MATLAB ® automatically chooses the limits or not.
Ikea näthandel To create a plot using a log (base 10) scale for both the x-axis and and the y-axis you can use the function loglog.

'0.1, 1, 10, 0.1'). Is there a way to control directly the format of axis tick labels, or I have to work it around using a … MATLAB: LOG vs LOG10 plot. I want to have a plot in a 'log10(x)log10(y)' scale. Up to now, I was using the 'loglog' plot.
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Y = log10(X) Description. The log10 function operates element-by-element on arrays. Its domain includes complex numbers, which may lead to unexpected results if used unintentionally. Y = log10(X) returns the base 10 logarithm of the elements of X. Examples.

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When plotting, why do we need to plot with 10*log10(pxx) instead of only using pxx? Even when I use either ways of plotting, I cant seem to emulate the yrange in the example plot (attached). The closest plot seems to be plot(fxx, 10*log10(pxx), fyy, 10*log10(pyy)) but the yrange is different. Subscripts and supercripts in heatmap axis labels. Learn more about heatmap, supercript, subscript, axis labels MATLAB The messy tick labels are also a pita that's been a continual pet peeve of mine that TMW didn't allow the TeX interpreter in the 'ticklabel' so you have to use text to write them formatted when faced with the problem of log axes with other than the standard decade ranges. There've been a coupld of postings on the subject with the last month or so that illustrates how to solve that minor I cannot get to implement correctly neither of the two solutions given here. I just wanted to make a quick image from a "rows x columns" matrix, where the Y axis must be plotted in log scale.