# z8080

10 questions

0

votes

0

answer

4

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### Finding all occurences of a string within a cell array (itself part of a struc)

I have the following structure
dataDens =
dens: [1x172 double]
level: {1x172 cell}
raga: {1x172 cell}
within which dataDens.raga consists of (reducing the number of columns below for simplicity)
Columns 1 through 3
'Multani' 'Tori' 'Tori'
I'd like to find the indices at which 'Tori' appears...

1

votes

0

answer

241

views

### Confidence band around linear least-squares line (Matlab)

I am using the Matlab function lsline to add a linear least-squares line to a scatter plot. I would like to add a 95% confidence band around that fit line, such that it looks like this (plot is made with the python function seaborn):
However, lsline returns no fit parameters from which to construct...

1

votes

1

answer

254

views

### Matlab: mix-up of built-in and external functions

Matlab (2015a) is behaving weirdly: a number of builtin functions are not responding as expected. For instance, typing
ttest([1 2], [1 2])
results in
Error using size
Dimension argument must be a positive integer scalar within indexing range.
Error in nanstd (line 59)
tile(dim) = size(x,dim);
Error...

1

votes

1

answer

130

views

### Matlab - Error bars added to column plot instead of regular line plot, and stacked 2x2

I would like to create a 2x2 plot with error bars, where each mean is represented by a column rather than by a marker (data point), something like this:
The errorbar function in Matlab seems to not have the option to make columns instead of simple markers, and also no option to stack the four entiti...

3

votes

0

answer

61

views

### Finding user images based on keywords/tags and precise map location

For a given geographical location, defined either as a place-of-interest or as a delineated area on the map, I would like to find user-submitted pictures whose tag matches a certain keyword. For instance, I'd like to find pictures tagged by users with the word 'rainbow', and whose location is within...

2

votes

1

answer

36

views

### Matlab legend for two plots only applies to second plot

I need to plot data of two vectors, and want the data points of each to be shown in a different colour that is explaned in a legend. However, the code below displays only the legend for the second one. What am I doing wrong?
for i_plot = 1 : plot_step : N
subplot(N, 1, i_plot)
h_A = plot(bookmarksA(...

3

votes

2

answer

17k

views

### Youtube ?rel=0 tag no longer working

I was trying to share a Youtube link and wanted the person to just see that clip without any of the irrelevant suggestions that pop up next to it. I knew that adding ?rel=0 (or &rel=0) at the end of the URL used to achieve this, but this doesn't seem to be working anymore. After googling a bit, I fo...

3

votes

1

answer

2.9k

views

### Grouping Figures separately into windows and tabs

I have 4 plots to make, of vectors y1, y2, y3 and y4, all as a function of a vector x. I would like the first two plots to be grouped as tabs within a single Figure window, and the next two plots also grouped as tabs but in a separate window.
I tried this code:
figure
set(0,'DefaultFigureWindowStyle...

2

votes

1

answer

70

views

### Controlling scatterhist bar colors

I was trying to make the bars in my scatterhist plot be of the same color as the markers:
x = randn(1,20);
y = randn(1,20);
myColour = [1 0 0]; % red
scatterhist(x, y, 'Color', myColour);
mygca = get(gca,'children');
set(mygca,'markerfacecolor', myColour);
However, the bars are of a slightly differe...

2

votes

1

answer

216

views

### Matlab plot saved as (vector) EMF but rendered as raster

I have Matlab code that produces an array of subplots that looks like this:
When I save this as an EMF file (normally a vector format) and insert in Powerpoint or view with Inkscape, then zoom in closely on the image, it looks pixelated, and clearly made up of a single encapsulated object as opposed...