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Louise Wilson


Last seen: 9 dagar ago
23 total contributions since 2019

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Question


Error: Warning: The end of file was reached before the requested samples were read completely. Total number of samples read is 15138816.
I am getting an error which says that the file I am reading is too short to read the requested number of samples. However, I kno...

11 dagar ago | 0 answers | 0

0

answers

Question


Subset timetable based on variable value using cell format
I have a timetable which looks like this: I would like to subset the timetable based on the values of the variables DayName,T...

15 dagar ago | 1 answer | 0

1

answer

Question


How to subset common datetimes from multiple timetables
I have five timetables which contain data for five locations across a common time period. I have presented these in a histogram ...

ungefär en månad ago | 0 answers | 0

0

answers

Question


How to count number of days within datetime array
I have a timetable which spans a year. The intervals between the datetimes varies from one minute to ten minutes. I am intereste...

ungefär en månad ago | 2 answers | 0

2

answers

Question


Randomly select one file, every 10 files, and randomise where you take that file from
I have a database of thousands of .wav files which I am looking to subset. For every 10 files, I would like to select one file, ...

ungefär en månad ago | 2 answers | 0

2

answers

Answered
Reading a large csv and converting to timetable
tt.Var1=datetime(tt.Var1, 'ConvertFrom','datenum');

4 månader ago | 2

Question


Reading a large csv and converting to timetable
I have a large .csv (7179x72001) where the first column is filled with datenums and the remaining columns are numerical values. ...

4 månader ago | 1 answer | 0

1

answer

Question


Why can't I convert from datenum to datetime?
I am trying to convert a vector of datenums to datetime but for some reason having issues. The spreadsheet I am working with is ...

4 månader ago | 2 answers | 0

2

answers

Question


Read several large csv and store as separate variables
I have 26 large .csv files that each take a while to load in to Matlab. I would like to be able to read them all in, using one f...

9 månader ago | 1 answer | 0

1

answer

Question


Make informative x-axis labels for long term spectrogram plot
I have a spectrogram which spans one month worth of 2 minute recordings. Instead of labelling each two minute recording on the x...

10 månader ago | 0 answers | 0

0

answers

Question


Why do I have negative dB values after converting PSD output to dB?
I'm using acoustic data which I am in the process of producing spectrograms for. At the moment I am working with one .wav file a...

10 månader ago | 0 answers | 0

0

answers

Question


I have a matrix with one column in serial datenumber format, how do I select data from a certain time period?
I have a large dataset where the first column is filled with serial datenumbers. I want to use these to select the rows of data ...

10 månader ago | 1 answer | 0

1

answer

Question


How to compare contents of folders, check for missing files?
I have a folder of files, which contains .sud files and .wav files. The .wav files are decompressed .sud files and should be equ...

11 månader ago | 1 answer | 0

1

answer

Question


Error when reading a csv using csvread
I am trying to read in a .csv file, which I have read in previously with no trouble. Here are my command and errors: >> A=csvr...

11 månader ago | 1 answer | 0

1

answer

Question


Find specific date/time from a series of datenums
I have a 7184x72001 double matrix where the first column is a list of serial datenumbers. I am happy to keep the format this wa...

11 månader ago | 2 answers | 0

2

answers

Question


Is it possible to read time stamps from photos?
I have thousands of photos, each with a time stamp identical to that above. I'd like to write a script which will automatica...

11 månader ago | 0 answers | 0

0

answers

Question


How to write 2x1 string to csv?
I have created a 2x1 string array which contains filenames in the first column, and a 'yes' or 'no' in the second column. I'd l...

12 månader ago | 1 answer | 0

1

answer

Question


Trying to request user input and then perform if elseif else end function...
I have a for loop which generates a figure on each loop. Based on what I see in the figure, I want my code to request a user inp...

12 månader ago | 1 answer | 0

1

answer

Question


Convert from datenum to yymmddHHMMSS
I have a large list of dates which I previously converted from yymmddhhmmss format to datenum format using dateFormat='yymmddHH...

12 månader ago | 1 answer | 0

1

answer

Question


Get variable name into filename using strcat
I am trying to create a filename for a .csv file using an existing variable name, which is a number e.g. '5100', and a manual in...

12 månader ago | 1 answer | 0

1

answer

Question


In a large matrix, find and provide location of rows containing zeros
I have a series of large matrix, 7184x72001, in which the first column is a datenum vector, and all the rows represent values fo...

12 månader ago | 1 answer | 0

1

answer

Question


Make an app using GUIDE and for loops
I have a code which runs a series of for loops on a folder of .wav files, and at each iteration produces one spectrogram plot. I...

12 månader ago | 1 answer | 0

1

answer

Question


X axis is not displaying final value
I am trying to plot my x-axis from min(x) to max(x) but for some reason the final value wont display, even though the plot runs ...

12 månader ago | 1 answer | 0

1

answer