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Cell Array Dynamic Size
If you are happy with storing the data as a matrix for each sheet : filename = 'Q.xlsx'; n_sheets = 2; DP = cell(1,n_sheets);...

約2年 前 | 0

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I have IgorTime data in which time:units = "seconds since 1904-01-01". I would like to convert this seconds to datevc.
First: Are you sure your T vector is in seconds? If so, your time list covers about 48 milliseconds around 01-Jan-1904 11:41:29....

2年以上 前 | 1

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How to add headers to Excel.
filename = 'testdata.xlsx'; header = {'name', 'Age'}; A = [12.7;5.02;-98;63.9;0;-.2;56]; B= [12.7;5.02;-98;63.9;0;-.2;56]; c...

2年以上 前 | 1

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Plot multivariable function,can't get the plot right ?
The main problem with your plot is simply that the large values of f for y > 0.5 dwarf the variations at lower values. Changing...

2年以上 前 | 1

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Matrix divison or calculating slope
There is a syntax error with your use of parentheses. Also, the slope for the last row is not defined. This should work: nro...

2年以上 前 | 0

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fitting a curve (3D) to pointcloud data
Assuming that the points are listed in sequence along your curve, you can express x, y, and z as functions of the (approximate) ...

2年以上 前 | 1

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Word Search Words Overlapping
I was fascinated by your problem, so I wrote my own version. This gave me some insights: I recommend that you first create an ...

2年以上 前 | 0

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How to find same element in txt file (in a coloumn) and find the amount for averaging the value of another coloumn ?
There may be more elegant ways to read the file, but I often prefer to use textscan to read a text file into a cell array of str...

2年以上 前 | 1

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Degrees-Minutes-Seconds Separation
It simplifies things if you use a doubke quote (") instead of two single qotes ('') to denote seconds. I enclose the modified ...

2年以上 前 | 0

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reading a txt file with rows of different length
fid = fopen(filename); lines = textscan(fid,'%s','delimiter','\n'); fclose(fid); lines = lines{1}; % The points data are in ...

2年以上 前 | 3

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Reading data row by row into matlab.
I often find it useful to read the file into a cell array of strings using textscan. Then I can easily experiment with how to b...

2年以上 前 | 0

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Reading CSV files in a sequence based on numeric value in file name
d = dir('*.csv'); filenames = {}; index = 0; k = 0; for i = 1:length(d) % Using regexp with lookaround on the file name t...

2年以上 前 | 0

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How to index a random matrix with set conditions?
For a list of the negative values: negM = M(M<0) For the indices of the negative values: [i,j] = find(M<0) To display only t...

3年弱 前 | 1

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How to identify points that are located in a polygon when this polygon passes through the meridian?
It seems that you are using the mapping toolbox, Then you can use ingeoquad: ingeoquad([35,45],[0,10],[30 40], [355 5]) Your ...

3年弱 前 | 2

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I have set of latitude and latitude of a specific region which has the mobile towers deployed and now I want to know the best possible location to deploy new mobile towers to overcome the coverage issues, which algorithm or what will be best way to ?
Obviously, optmal locations will depend on many factors, such as topography and signal interference risk. But as a first approx...

3年弱 前 | 3

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how can i get an improved Euler's method code for this function?
There are two problems with your code: The analytical solution is incorrect You increment x inside the for loop. Don't. The f...

3年弱 前 | 2

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saving real roots in a vector; "solve" gives me weird results
The code below will solve your problem as stated. In the general case with other parameters it may not be robust. You may need...

3年弱 前 | 0

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How to find the arclength and radius of curvature for a set of 3D data points?
I was inspired by your question to write a functon that calculates the arc length and curvature of a 1D curve in 2D or 3D space....

3年弱 前 | 2

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'For ' loop for every day for one minut fequency sea level data
Your problem seems to be the selection of data to calculate min and max values. The code below should help you on your way. Con...

約3年 前 | 1

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Curve fitting with an integral involved
function theta = Gil data = [ 0.5 1 1.1 0.83 1.6 0.74 2.2 0.55 2.5 ...

3年以上 前 | 3

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I am creating a date file using the following script, i want it to print DATES[] in the file my_dates.txt but it's only printing one date which is 2.0171e+09, that is when i type A(1,1)...i pleading for help?
The problem with your file is that you overwrite your Date_num value whenever you calculate a new one. Your DATA variable has n...

3年以上 前 | 0

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How to determine the centroid of this fan(triangle) where the coordinates of one of the vertices is only known and the distance is also known?
In my comment there was a typo in the expression for the centroid. A factor of 1/3 was missing. Sorry about that. Here is a ...

3年以上 前 | 0

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How to output specific rows from tables depending on values within the table?
I am a little uncertain about the type of data structure you use. For completeness I therefore entered your data in an Excel wo...

3年以上 前 | 0

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switch in text file
I think a simple if ... else would be better that switch in your case: if isempty(strfind(C,'exp_sse2.c')) % Actions ...

3年以上 前 | 0

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how to pass the vector "TCP_value" in to the function
In your test you must compare element no, _i_ in the TCP_value array with the limits: function GRADE(TCP_value) for...

3年以上 前 | 0

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How can i change the 1st row 1st column and last row last column values in a tridiagonal matrix
A(1,1) = 17;A(end,end) = 23; You can create your original matrix without using a loop: n = 5; A = diag(ones(1,n))*3...

3年以上 前 | 0

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If Statement to meet 8 Conditions
tests = false(8,1); test(1) = all(channel1(1:10)>=min1 & channel1(1:10)<=max1); test(2) = all(channel2(1:10)>=min2 & cha...

3年以上 前 | 0

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Center align multi-line title in latex format
Using Latex forces left-alignment of lines in cell array of strings . (This may have been changed in the newest versions of Mat...

3年以上 前 | 0

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How can I make this program accept input 'value' as only a positive number except for the case 1(where i would like to have both negative and positive numbers as input)?
if a == 1 R = value*5; else if value<0 disp('Value must be positive') else R = v...

3年以上 前 | 0

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How to convert array of chars examples: '09:56am' or '09:56pm' to number?
As Stephen points out, it is not quite clear what you want to do once you find a string with 'am' or 'pm', but this may get you ...

3年以上 前 | 0

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