# Introduktion till Matlab

Grundläggande Matlab

To plot a set of coordinates connected by line segments, specify X and Y as vectors of the same length. The log of negative real values is equal to the log of the positive value, plus (pi*1i) -- that is the result is complex. When you set YScale to log, then internally it would take the log of the negative values you have, and would found that the log is complex. example Y = log10 (X) returns the common logarithm of each element in array X. The function accepts both real and complex inputs.

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0. Hi i'm having a problem where I Positive & Negitive Log10 Scale Y axis in Matlab (4 answers) Closed 5 years ago. I have a set of data, which should be plotted in a loglog scale. x-values are always Y = log10(X) returns the common logarithm of each element in array X. The function accepts both real and complex inputs. For real values of X in the interval (0, Inf), log10 returns real values in the interval (-Inf,Inf).

Plot the values k -0.4 for k = 1, 4, 9, 100 2 using linear scales on both axes, a log scale on the x-axis and log scales on both axes.

## MATLAB — en kort introduktion

If they are linearly-scaled, use the Exponent property in Tick Values and Labels in the NumericRuler Properties documentation. However, that does not appear to work on log-scaled axes, so you would likely need to create your own y-tick labels. Use the compose function to create them. How to convert data from dBW units to dBm in MATLAB 7.5 (R2007b) MATLAB FFT (y-axis values) I get the peaks at the wrong frequency and with the wrong amplitude.

### Matlab grund - Numeriska beräkningar SF1522 - StuDocu

Copying colorbar from one figure to another and replacing first YTick; Convert log scale to linear scale; Rotate the colormap image: Axis labels missing after rotation! Errorbarplot with log-y scale and adjustable errorbar-ticks The log of negative real values is equal to the log of the positive value, plus (pi*1i) -- that is the result is complex. When you set YScale to log, then internally it would take the log of the negative values you have, and would found that the log is complex. Actually, the y-axis is the log of any data.

(8.10).

Cisco stockholm

Dear all, an annoying issue when plotting on log scales, is apparently not being able to control the format of axis tick labels. I want to manually set my own labels, e.g. XTickLabels = num2str (10^-1, 10^0, 10^1, 10^-1]. log ticks on Y-axis. Learn more about logspace Matlab changing y-axis tick values.

Viewed 376 times -1 $\begingroup$ I have a plot in which the y-axis ticks are like 2.400400e-01. I do not like this, I need to make it % Get Y-Tick Values ytix_exp = fix(log10(ytix));
2013-02-24
MATLAB FFT (y-axis values). Learn more about matlab, fft
semilogy(X,Y) plots x- and y-coordinates using a linear scale on the x-axis and a base-10 logarithmic scale on the y-axis. To plot a set of coordinates connected by line segments, specify X and Y as vectors of the same length. Use your actual data as labels, but scale the plotted data with log10.

Fysikalisk storhet

You can create The following statements add a title and x- and y-axis labels to an existing graph. plot(w/pi,20*log10(abs(H))); grid; title('Magnitude Response in Mathematical Expressions. MATLAB log(x) log10(x) sqrt(x) exp(x) x^2. Examples: ylabel.

The semilogy function, chooses major tick marks that
Plotted lines are: y = 10x (red), y = x (green), y = log(x) (blue). The linear-log type of a semi-log graph, defined by a logarithmic scale on the x axis
exams using Matlab, Agilent VEE, or even with bare hands, where the hori- logarithmic scale meaning that their horizontal axis is log10 ω (or our x!).

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### Matematisk Ordbok - Scribd

The equation for decibels is A = 10*log10(P2/P1). So is it power?

## MATLAB procedure for digitization of analog calibrations

Using MATLAB spectrogram() to plot When I look at your code, it appears to me that you expect that particular axes coordinates will translate to different x or y coordinates depending upon whether the axes is set to log or linear. But look at the routine you are calling, axes2pix(): it does not take an axes as input, so it cannot possibly be querying whether the axes is log or I'm trying to recreate a matlab plot I've come across in some other work, but I don't quite understand the scale they are using. The y axis increments are as follows (from the top [+ve y]): 0.9999, 0.999, 0.99, 0.9, 0.

How to do that?