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Content Feed
How to speed up table merge / concatenation?
Hi Andrea, I'm not sure whether ID in each table is unique (no duplicated value) and whether table_2 and table_3 contain all ID...
alrededor de 1 año hace | 0
How can I retrieve data from cdfepoch objects into datetime ?
Hi, Try this data = cdfread('yourfile.cdf', 'DatetimeType', 'datetime');
alrededor de 1 año hace | 0
Corresponding data arrangement problem
Hi Peter, You can create timetables from your data and use synchronize to to merge them into one timetable. >> load('plot_tida...
alrededor de 1 año hace | 0
Specifying "MergeKeys" for "innerjoin"
Hi, Regarding the output of innerjoin, the key values from left table are the same as that from the right table. So, we only ne...
más de 1 año hace | 1
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plotting data in the table
Hi, Stackedplot is designed to visualize table and timeble. Hoping it is helpful to you. Thanks, Lei
más de 1 año hace | 0
Hi. I have different data types (text and numeric) within the array range that I read from the input table. How can I avoid the error of using table2array and cell2mat?
Hi, Please check whether table2cell meets your need. >> t = readtable('Best NST models(1534002).xlsx'); >> table2cell(t)
más de 1 año hace | 0
Grouping consectuve datapoints from a table into an array
Hi Youssif, Try the following code to see whether it works for you. The main idea is to use diff to find the group edge, and th...
más de 1 año hace | 0
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how to split table with different time values
Hi, Datevec is in discourage use now. You can use retime to group your data and do plot. >> tt = readtimetable('tb.csv') t...
más de 1 año hace | 0
Can one extract a unit of time from a duration object?
Hi Alexandre, Applying seconds/minutes/... to a duration array returns numeric value >> d1 = seconds(60) d1 = duratio...
más de 1 año hace | 0
How to convert a time series data to txt file?
Hi James, You can use timeseries2timetable to convert your timeseries to a timetable. Then use writetimetable to write your dat...
más de 1 año hace | 1
How to concatenate 4 columns in one table into one coulomb
Hi, You can you mergevars to merge table variables. >> t = table("Japan_001164_jpg.rf.c02ee7802c701e228f23a4033eb236c2.jpg",38...
más de 1 año hace | 0
stack command errors with multiple column variables of different data types
Hi CAM, Your code is trying to stacking {'A1' 'B1' 'C1'} into one variable. Since C1 is text while A1 and B1 are numeric, an er...
más de 1 año hace | 0
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Merge multiple tables with three keys
Hi David, I'm not sure whether I understand your problem correctly. Based on my understanding, outerjoin should help you with y...
más de 1 año hace | 0
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Simple interactive plot with variable time axis
Hi Dormant, The function "stackedplot" is designed to plot time series data corresponding to the same time. I guess that functi...
más de 1 año hace | 0
I cannot interrupt the display of a very large table with "more on"
Displaying a large table is slow. I agree with you that Ctrl-C doesn't work. I used head(t) / tail(t) to just display the beginn...
más de 1 año hace | 0
Convert some Table Variables from Cell to Double
The funciton 'convertvars' is designed to be a convenient way to type conversion of table variable. Regarding your use case, you...
más de 1 año hace | 1
Plot time series data
The function 'stackedplot' is designed for plotting time series. >> C = {'2022-08-27T00:00:00.019538' 16065 '2022-08-27T...
más de 1 año hace | 0
segment exact time of signal
Hi Farhad, You can also use timetable + timerange indexing to complete your task. >> tt = array2timetable(val','StartTime',dur...
alrededor de 2 años hace | 0
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Determining the hourly time series from 5 minutes and 15 minutes time series data
Hi Manikandan, You can use timetable to store your data, and use retime to resample your data. rainfall = readtable('Rainfall....
alrededor de 2 años hace | 0
(Select all that apply) In which of the following situations would you typically use a categorical array?
Hi Sangat, Typically, categorical is useful when your array is large, contains duplicated values and has finite set of discrete...
más de 2 años hace | 1
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Filter a timetable (balance a panel data)
Hi Angelavtc, You can use unstack to first unstack the "Id" variable into multiple variables (In your case, into 3 variables). ...
alrededor de 3 años hace | 0
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Join several timetables with different variables and times and duplicates
Hi, I came up with two solutions. Solution 1: use outerjoint. It is easy to understand but have duplicated rows that need to b...
alrededor de 4 años hace | 1
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Searching tables, for modification
Hi Frans, To index into a table, you should use T{rows, vars} instead of T(rows, vars). May I ask a question about why didn't ...
alrededor de 4 años hace | 0
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Creating numerical variables from categorical variables in an unbalanced dataset
Hi Grigorios, You can do something as the following. catVar = categorical(["a" "b" "c" "b" "a"]); numValue = [0.1 3 100]; % T...
alrededor de 4 años hace | 0
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Plotting table data with dates
Hi Jinang, In your code, the first column of "A" is not a datetime. It is just numeric value calculated by using division opera...
alrededor de 4 años hace | 0
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datetime "PivotYear" doesn't work?
Hi Richard, The pivot year has an effect only when the 'InputFormat' parameter is specified and it includes y or yy. Therefore,...
más de 4 años hace | 0
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Find a substring in table
Hi Katharina, You should cellstr to convert the categorical data to a cell array of character vectors as: startsWith(cellstr(t...
más de 4 años hace | 0
making `errorbar` work with `datetime`
Sai is correct that errorbar doesn't yet support datetimes. I've made an enhancement request, and hopefully errorbar will be upd...
más de 4 años hace | 4
Find a substring in table
Hi Katharina, You can make use of table indexing to get that data you want. I’ll use a simple example below to illustrate the o...
más de 4 años hace | 2
Retime timetable out of bounds
Hi Rub, First, about your code examples I have some suggestions. I saw you used datenum in your first post. It is good that you...
más de 4 años hace | 1
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