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# dpb

##### Last seen: Today
4,516 2012 年以降の合計貢献数

#### dpb's バッジ

How to seperate an array into two?
Not a good idea still unless is homework...there are any number of ways to do so; about as simple as any would be for i=2:2:num...

2日 前 | 0

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I am working on a certain problem but the end result is a single value repeated for n elements.
Incorporating comments from the stream above in result...using your code and loop would look something like %%Task 1 %Assignin...

3日 前 | 0

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How can I randomly select a subset of logicals?
Nmatch=20; % don't bury data in code; use variables for a variable factor isM=find(v); % population of indices that mat...

4日 前 | 0

FFT using excel data
0Hz is the DC component...if your signal is not zero mean, then the mean will be the DC component. To eliminate it, subtract ...

4日 前 | 1

how do I extract time series?
>> which time C:\ML_R2019b\toolbox\matlab\bigdata\@tall\time.m % tall method >> which day C:\ML_R2019b\toolbox\matlab\timefu...

4日 前 | 0

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From nested structure to table in one line of code
Will need some additional cleanup, but the basic tranformation is as >> T=struct2table(struct2array(S)); >> T(1:10,:) ans = ...

4日 前 | 0

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Negative zero when writing to file
The problem is one of rounding/floating point precision. The cos(3*pi/2) is mathematically zero, indeed, but it isn't quite so ...

5日 前 | 1

Import files from a folder into Matlab and create a file list
d=dir('*.json'); for i=1:numel(d) vals{i} = jsondecode(fileread(d(i).name)); ...

5日 前 | 0

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Finding yearly average of data in a matrix
Of course there is..."grouping variables" [meanByYear,yr,yrcounts]=groupsummary(iceArea(:,2),iceArea(:,1),'mean');

5日 前 | 0

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Finding full graph / minimum without an x range
Well, with such disparate magnitudes in terms, the interesting part is somewhat harder to envision...the second part goes to +in...

5日 前 | 0

extracting a and b beta parameters from distribution fitter app
If your save object is mybetaObject then myBetaObject.ParameterValues % both a, b or myBetaObject.a myBetaO...

6日 前 | 0

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How to arrange month columns based on date code is run?
vnames=month(datetime(1,[1:12],1),'short'); % return dummy variable names containing short month names % engine >> circsh...

9日 前 | 0

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Function overwrites output with a different number
Besides the refactoring and code mlint suggestions removal, I think the biggest problem is the function definition line functio...

13日 前 | 0

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How to decipher date formats?
"Is it possible to get their [variant input and ambiguous formats - sic] datenum correctly in a holistical way?" "Possible?" M...

13日 前 | 0

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Errorbar Plot with Line of best fit
S-S is correct that per the documentation lsline only works for scatter plots or not connected lines with plot Perhaps just a l...

14日 前 | 0

How to remove dates in graph ?
The error ax.XAxis.TickValues=1:10:length(NewP{:,"Date"}) Error using matlab.graphics.axis.decorator.DatetimeRuler/validateTic...

15日 前 | 0

How to find a particular value from 3-d matrix?
If you're certain the value 1.75 exactly exists in the file and that's all you want exactly (to machine precision) then simply ...

16日 前 | 1

how to read and create column vectors from this txt file (attached)?
A fixedWidthImportOptions object can help here altho the heading row doesn't quite line up to make it as trivial as could otherw...

17日 前 | 0

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Bar graph for two different arrays
Didn't read doc bar did you? It'll take 1:5 on the x-axis but bar([a;b].')

17日 前 | 0

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Removing NaN in Linear Regression Problem. Error in line 66.
You don't pass the table to regress but the variables to be used in the regression -- then you won't run into the issue inside r...

17日 前 | 0

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Reordering string arrays if string is >9
<ileexchange/10959-sort_nat-natural-order-sort>

17日 前 | 1

read coordinate from a txt file
textscan is overkill for a simple csv file of the above form -- controlpoints=importdata('YOURTEXTFILE.CSV'); and you'll have ...

17日 前 | 1

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Convert cell array to double, with comma separated elements
>> v=cell2mat(cellfun(@(s) sscanf(s,'%f,').',c,'UniformOutput',false)) v = 126.5000 250.5000 22.0000 27.0000 127.500...

17日 前 | 1

Trouble adding error bars to bar graph

18日 前 | 0

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Create a maxtrix of row x columns and add values (column-wise) in a loop
Comment moved to Answer since did seem to be the Q? asked... j=0; % initialize other array counter ...

18日 前 | 1

Use all table/timetable variables as input arguments of function without writing each variable manually.
As a start altho need more to know precisely what else to do, look at\ >> rowfun(@corrug_parameters,B3_B4,'InputVariables',{'di...

19日 前 | 0

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Output from while-loop at fixed values
Either compute the number of timesteps corresponding to your dt and desired frequency if dt is constant and output every N times...

19日 前 | 0

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Write matrix to a Tab-Delimited text file
If are only numeric values in those three columns, then why not use the numeric return values from n instead? Depending on the ...

19日 前 | 1

Matlab Simplifies Function To 0
That doesn't define a function in MATLAB syntax; it assigns the evaluation of the RHS of the assignment statement to a 3D array ...

20日 前 | 1

How to change x and y labels limts
"When I put duration i got error. When I use xtick, the label didnt; fit to reality. " Must not have tried very hard or read t...

20日 前 | 1