Respondida
Show temperature differences in a dataset
Here you can see the difference between minimum and maximum taken over the 3rd dimension, which I can only assume is time? ...

más de 7 años hace | 0

| aceptada

Respondida
question on months&days in 2012
Now that you've basically solved it, here is my (hopefully correct) solution. Note that for scalars you can write && instead of ...

más de 7 años hace | 0

| aceptada

Respondida
datenum to UTC?
Yes, use datetime instead of datenum. t = datetime('10-Oct-2013 15:59:00','timezone','-04:00') t_unix = posixtime(t)...

más de 7 años hace | 0

Respondida
shifting time in timetable
Simply shifting the time without affecting the data TT.Time = dateshift(TT.Time,'start','day') Changing the format (hidi...

más de 7 años hace | 0

Respondida
Summary Statistics Table by group
You need to pass the table as input to *grpstats*. Assuming that *dsa* is a cell array with grouping variables, then change your...

más de 7 años hace | 0

Respondida
how to use imshow for this array?
It's not imshow but you could use imagesc instead imagesc(out_map) If you really want to use imshow, then B = mat2g...

más de 7 años hace | 1

| aceptada

Respondida
Generate data from a image plot with colour code as reference.
I'd approach this by the following steps. load image with axes and everything: I = imread('FileName.png'); imshow(I) ...

más de 7 años hace | 0

| aceptada

Respondida
exstract consecutive duplicate element of array
A is your matrix. This line removes duplicates: A([false diff(A)==0]) = []; Or you could expand it to this, given your v...

más de 7 años hace | 0

Respondida
Subscript indices must either be real positive integers or logicals.
It's hard to tell without having some input, but these types of lines are definitely wrong: ra(2i)=1; *i* is being inter...

más de 7 años hace | 0

| aceptada

Respondida
Reading pixels of an image
Indexing works by going through the matrix column by column, so that would be (1,5) in your example. Don't be afraid to test thi...

más de 7 años hace | 1

Respondida
How would i display a matrix as a graph?
Here's a custom plot type I made. It may look upside down, but the value on the y-axis denotes the row number. The "peak value" ...

más de 7 años hace | 0

| aceptada

Respondida
Surface plot of vectors with x and y vectors as index
After meshgrid you need to interpolate. For example z = griddata(xx, yy, zz, x, y) Then you can plot surf(x, y, ...

más de 7 años hace | 0

Respondida
Based on Column 3 values how to get specific column 1 values?
fid = fopen('sample.txt') out = textscan(fid,'%f%f%f','headerlines',1); fclose(fid) A = cell2mat(out); id0 = f...

más de 7 años hace | 1

| aceptada

Respondida
Draw a discontinuous line
Do not use indexed variable names. Build a 2xn matrix instead. x = 0.7000 1.8000 1.3000 2.2000 y = ...

más de 7 años hace | 0

| aceptada

Respondida
plotting colorcoded points on a map
Try this: scatterm(long_lat(:,2),long_lat(:,1),[],sen_s) I assume sen_s is the variable you want colorcoded. Adapt the c...

más de 7 años hace | 0

| aceptada

Respondida
Plot of maximum value of chosen column in matrix
In this case you could simply find the max in each column in one go [vm,idx] = max(M); %maximum of each column plot(t,M); ...

más de 7 años hace | 0

Respondida
Help to understand Matlab code
[m n ~] = size(im) ~ basically means "omit this output", and is totally useless in this context. It is useful in other case...

más de 7 años hace | 1

| aceptada

Respondida
how to find time difference between 2 times , in milliseconds.
Just work with duration format. t={'18:42:45.813' '18:42:46.028' '18:42:46.139' '18:42:46.359' '18:42:46.463' ...

más de 7 años hace | 1

| aceptada

Respondida
Seperate the data of a table
Just use logical indexing T{strcmp(T{:,1},'Fossil Gas'),end} The line strcmp(T{:,1},'Fossil Gas') returns a logi...

más de 7 años hace | 0

| aceptada

Respondida
Plot of confidence interval with fill
Nothing wrong, you just happen to have very narrow confidence bounds. <</matlabcentral/answers/uploaded_files/137818/untitle...

más de 7 años hace | 0

| aceptada

Respondida
How to make a scatterplot
Let Y be your matrix with data, you can simply make a scatterplot like this: x = 61:70; h = plot(x,Y,'bo','markerfaceco...

más de 7 años hace | 0

| aceptada

Respondida
how to read .dat file using txtscan ?
You can use readtable since the data is tabular. T = readtable('AE33_AE33-S02-00184_20170102.dat','headerlines',8) ...g...

más de 7 años hace | 1

| aceptada

Respondida
How to make a 2-D colormap with coordinates
Use a surface object surf(lon, lat, z) The data must be gridded, so you may have grid the data like this [LON,LAT]...

más de 7 años hace | 1

Respondida
Squared heatmap with random transition; animation
You could also use scatter with a superlarge markersize. figure; colormap([1 1 1;1 1 0;1 0 0;0 0 1;0 1 0]); [...

más de 7 años hace | 1

| aceptada

Respondida
how could avoid too have loop in big data
You can use findgroups/splitapply or put the data in a table and use varfun or grpstats. Upload some data if you need code. ...

más de 7 años hace | 1

| aceptada

Respondida
How to make a graph that shows evolution of a variable in time through different depths in a lake.
Just create a surface object. d = is your depth (1x38) t = is your time (1x3705) Te = is your temperature (3705...

más de 7 años hace | 0

| aceptada

Respondida
How can make arrows into the line step by step?
What you see on the figure is a quiver3 plot, where the arrows describe velocity. You did not provide any velocity data, but you...

más de 7 años hace | 0

| aceptada

Respondida
how to handle variable time stamped long time series data?
# Load data # Put data in two timetables # Use synchronize # Step 1-3 did not work? Upload the data.

más de 7 años hace | 1

| aceptada

Respondida
colour map scatter with multiple groups / variables
I would probably just create a new axes for each new scatter object. Each object then scales automatically and the same method w...

más de 7 años hace | 0

| aceptada

Respondida
Interpolate gridded matrix row-wise
Normally you could achieve this easily by interpolating over rows with a function that does not extrapolate by default. I believ...

más de 7 años hace | 0

| aceptada