Community Profile # Louise Wilson

Last seen: 2 días ago Active since 2019

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Change projection of netcdf data and convert from UTM to lat/lon
I have since realised that it is not logical to modify the spatial data in this way as it would break the regularity.

2 días ago | 0

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Interpolation(?) of 3D array
I have a 3D array (vardata) which contains sound pressure level data at a series of lat/lon coordinates for 91 different frequen...

2 días ago | 0 answers | 0

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Change projection of netcdf data and convert from UTM to lat/lon
I have a netcdf file vardata=ncread('TL__Map1_15C_sand1__20mres_-36.265137N_174.790466','TLdata'); ncdisp('TL__Map1_15C_sand...

5 días ago | 2 answers | 0

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Convert UTM to lat lon
I have a 290x480x90 array where the x and y are coordinates in UTM. I'd like to convert them to degrees minutes seconds and I'd ...

7 días ago | 1 answer | 0

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Accessing (interpolating?) data in 3D array
I have been using Matlab for many years but this is my first time working with a 3D array. My data is 290x480x90 in the format l...

7 días ago | 1 answer | 0

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Convert from linear to log scale and back again
I have include some example data. %fit curve [xData, yData] = prepareCurveData(log10(plot_data.xdata), plot_data.ydata); ft =...

8 días ago | 1 answer | 0

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Reading and visualizing netcdf with vectors of differing lengths
This is my first time reading netcdf data. I can read the file and variables of interest as follows: vardata=ncread('TL__Map1_1...

9 días ago | 1 answer | 0

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Datetimes don't seem to be recognised
Can anyone explain to me why this isn't working? For some reason, the datetime t is not recognised as occurring between times.t1...

22 días ago | 1 answer | 0

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Exclude certain dates on x-axis using xlim or xtick?
I have attached my dataset and a plot to illustrate what I am trying to do. I would like to remove the blank spaces between the ...

alrededor de 1 mes ago | 1 answer | 0

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Can you exclude dates in date range using xlim?
I have a dataset where the x axis is time and the y axis is sound pressure level in dB. The data is recorded continuously on a 2...

alrededor de 1 mes ago | 1 answer | 0

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Discrepancy between datenum and datetime?
I am trying to plot some data (attached) . The figure wasn't displaying the data I knew I had, so I tried again using datetime ...

alrededor de 1 mes ago | 2 answers | 0

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Data, which isn't missing, appears to be missing in surf plot
Can anyone explain the gaps (white bars) which arise in my surf plot? The degree to which they appear changes depending on wheth...

alrededor de 2 meses ago | 0 answers | 0

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Plotting spectrograms for multiple files
I have multiple acoustic files for which I would like to plot a spectrogram on a single plot. I know how to plot one spectrogr...

alrededor de 2 meses ago | 1 answer | 0

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Align two signals using cross correlation
I have two four channel recorders and a total of six microphones. Since the time lag between the two recorders is ~5 seconds, I ...

4 meses ago | 1 answer | 0

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Is it possible to write an 'empty' cell in Matlab, not NaN?
I would like to write an empty cell in an output file which I will save as a .bty file. The attached file is an example. In th...

4 meses ago | 1 answer | 0

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How to plot successive rows of a table when value is true
I have attached an example data set. What I would like to do is plot successive rows together if the time between successive row...

4 meses ago | 1 answer | 0

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How to chose the correct line style?
I have created the attached plot. I have a large dataset with multiple entries, each representing different moving objects. I wa...

4 meses ago | 1 answer | 0

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Error/fault in code, 'Unrecognized function or variable'
I have the following loop within my script. The intention is to process thousands of files within a folder through the function ...

5 meses ago | 1 answer | 0

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Subset using time range following specific time
I have two tables (see attached screenshot.) Both tables have a list of datetimes. I want to select the value from counts_subset...

5 meses ago | 1 answer | 0

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readtable working differently for different files
I have a bunch of spreadsheets which all have the same format. However, when I read them in, they appear differently... folder=...

6 meses ago | 1 answer | 0

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How to fit a log curve to a scatterplot?
Could anyone advise me on how to a fit a curve to this plot? The y-axis is decibels and so logarithmic. I have tried the hel...

6 meses ago | 1 answer | 0

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Is it possible to retrieve data from a website?
I have a list of vessel MMSI numbers. I would like to take each, enter it into the search bar on this page 'https://www.vesselfi...

6 meses ago | 0 answers | 0

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Saving matrix that contains cell arrays
Can anyone tell me the best way to save a large file that looks like this? I will be sharing it with colleagues to use in Matlab...

8 meses ago | 1 answer | 0

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How to avoid Warning when assigning values to a table
Hello, I have the attached table. I create an empty table and then add each variable separately from the name of files in a fol...

8 meses ago | 1 answer | 0

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Matlab is mixing MONTH and DAY up
Hello, I have a datetime array where the format is dd/MM/yyyy, but when I used ymd(), Matlab tells me that day is month and mont...

9 meses ago | 1 answer | 0

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Function to use withtol but only forward in time?
I have a timetable where the rows are datetimes. I then have a second timetable and I want to match the values in the second tim...

9 meses ago | 0 answers | 0

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Prevent plot() filling missing data between points
I have the plot belo where x=datenum and y=SPL. You can see, particularly in the second plot down, that there are periods where ...

10 meses ago | 1 answer | 0

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Synchronize timetables with tolerance of 5 minutes
I have two tables with common information and I would like to synchronize them, creating an additional column for data from one ...

12 meses ago | 0 answers | 0

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Aligning axes of two plots, one categorical axis, one datetime axis
I have the following figure. As you can see, the x axes of the bottom two plots are perfectly aligned. These axes are datetime ...

alrededor de 1 año ago | 1 answer | 0