Comments and Ratings

Yes Olivier, or with:
>> imagesc(U,'AlphaData',~isnan(U),'AlphaDataMapping','none')
I just wanted to be able to paint NaNs with specifyc color without modifying the axes color.
Probably I should include this "transparent" option. Thank you!

Carlos

Well done

Carlos,
I like your function moving_average, very easy to use. I have data which has small to large time gaps and I don't want to filter across the gaps. I could break the vector up at each gap but that would mean work. Any suggestion on how to handle something like this?

Hi Stefan, as far as I know, that functionality of the ZOOM and PAN functions does not work even on the first version of MATLAB v7.

One workaround is to edit "temporarly" the ZOOM/PAN function by adding the line
datetick('keeplimits')
at the end.

Or make your one function

function myzoom()
zoom
datetick('keeplimits')

and run
>> datetick
>> myzoom

Let me know if it works for you. Via email if possible.

Carlos

Simply terrific. I've wanted something like this for years. Thank you!

I m not able to make check this out, i did follow all the steps mentioned but im getting one error:

??? One or more output arguments not assigned during call to 'C:\matlab\MATLAB701\toolbox\matlab\graph2d\zoom.m (zoom)'.

Error in ==> tlabel at 237
  zh = zoom(xa);

What do i need to do for this ?
Please let me know,
thanks,
raghu

very good job, thank u!

Hi everyone, I've got a problem: when I use the function cmapping in the command line it works, but when I try to use it in a GUI there are no errors, but the function does nothing, please help me.

I've been using an older version of this function for a few months now, and it's a great little utility, much more flexible than datetick. However, I noticed two small bugs with this release:

1) If you plot data that spans several years, then zoom in to a few-months range, a reference year will appear in the ylabel. However, when you revert to the original multi-year range, the reference year ylabel remains.

2) If datetick thinks there should only be one tick, the new version of tlabel will crash on tlabel>fixTicks line 1108. This is really due to buggy tick location calculations in datetick, and may only occur in older versions of Matlab (I'm running R2007a) since I believe datetick has been updated since then. This situation only seems to arise for a small subset of cases where data spans a year plus a few hours. Older versions of tlabel were able to handle this case.

Other than those two issues, great function, and I really like the new 'whichAxes' and 'reference' options.

This looks very useful as I have been a bit frustrated with datetick not zooming so . I may be having trouble understanding the help though, as my testing of it didn't go very well (see script below, with comments). In particular:
1) tlabel; on its own didn't do much.
2) I couldn't feed it a numeric date format (e.g. 20) even thoughh the help says I can.

Any help with this would be appreciated as I will find this very useful.

Thank you

Roger Parkyn

sd = 734010:1:735000; %Test data vector
ydata = sin((sd - 734500)/73.4500); %Test data
figure; plot(sd, ydata);
tlabel('ddmmmyy');
datetick; %works ok but won't zoom
tlabel; %Doesn't give a sensible date format; just puts the serial date on
tlabel('ddmmmyy HH:MM');
tlabel(20); %Does not work; script fails

Very very good! Just when I needed such a function, linkzoom appeared as the Pick of the Week. As I mentioned there, it works well with addaxis, http://www.mathworks.com/matlabcentral/fileexchange/9016 , without the need to replace the original zoom function.
Thank you Carlos Adrian!

Thanks for your response, Saludos.

First, PCOLOR(X,Y,C) regards X,Y as the edges of pixels, while IMAGESC(X,Y,C) regards X,Y as the centers of pixels. The latter is what I need.

Second, what I want is not 'interp' but 'faceted', namely facet lines at the edges of pixels, which is what PCOLOR does by default:
http://www.mathworks.com/access/helpdesk/help/techdoc/ref/pcolor1.gif

D.

This is a great script. I've got a relevant question. Do you know if it is possible to make imagesc/imagescnan draw facet lines as shading facets applies to pcolor?

Thanks!

One small mistake in my comment: on my personal laptop, the plot looks normal WITHOUT these two bizard things happening.

Thank you.

Imprivement:
When called readline(file, lines) and lines is a vector, it should not matter wether lines is a row or column vector.

Dear all, I'm dealing with gap filling on weather measurements which the NaN should be filled based on the time window of several days.(i.e., neighborhood hour of several days).

For example, one NaN at 5pm will be replaced by the mean value in the neighborhood hour of neighborhood several days. (let's say 4, 5 and 6pm of neighborhood 5 days)

Here is the bone of question I like to deal with:

values = rand(1,1000)';
fake_NaN = floor(rand(1,300)'*1000);
values(fake_NaN) = NaN;
for i = 1:length(values)
n = 24 * i * (1:5)
having_nan_index = find(isnan(values))
new_values = nanmean(values(having_nan_index * n-1:having_nan_index*n+1))
:
:
Something like that
:
:

If you have any solutions or advices, please feel free to let me know. Thanks, Michael

hi Carlos i have send you an email about the difficulties in programmation of the recursive moving coverage have you any idea about this issue? any help please? thanks by advance

You just need to use >> set(he(1),'Xlim',[0 1]), to modify the limits of the first axes from 0 to 1. Carlos

Thank you Yanaki. In fact I have rewritten the code, but I haven't update it yet, because I'm reorginizing all of my programs. But thank you again, you are correct.

The author

i use it all the time... thank you

It works.