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Robert Demyanovich


Last seen: 1 year 前 |  自 2021 起处于活动状态

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统计学

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Get maximum value for a row in a MATLAB table
I need to get the maximum value for a specific row in a MATLAB table (not matrix). Let the variable i specify the row number in...

2 years 前 | 1 个回答 | 0

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Concatenate strings and numbers
I'm using the following code to try and create a "Range" for importing an excel spreadsheet into MATLAB. Instead of getting a s...

2 years 前 | 1 个回答 | 0

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Linear Model with 4 parameters
I need to come up with an estimate for the starting values of the coefficients of a rational model. The rational model is: On...

2 years 前 | 1 个回答 | 0

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Need to move to another line to avoid error
My simulations is tedious and takes quite some time. To ease my burden, I have setup the simulation to run in batch mode. The ...

3 years 前 | 0 个回答 | 0

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Divide a scalar by all non-zero values in a matrix row and input results into a new matrix
I have a matrix cA. I want to input values into a matrix A that are a scalar (1E-14) divided by each element in a row of cA tha...

3 years 前 | 0 个回答 | 0

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Merge selected column elements from two matrices into a new matrix
I have two identically sized matrices. Once matrix, cA, contains the concentration of hydrogen ion while cB contains the concen...

3 years 前 | 1 个回答 | 0

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Pass curvefit start points into function
I am new to Matlab, but have somehow figured out how to create a curve fitting function that is called by the main program. I n...

3 years 前 | 1 个回答 | 0

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Create a new table by transforming data in existing table with few lines (maybe just one)
I have a table (not matrix) that has data read in from Excel. I want to change some of that data by multiplying by certain valu...

3 years 前 | 1 个回答 | 0

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Output the amount of time it took to run a simulation
My simulations take a long time. I would like to be able to measure the amount of time it took for a simulation to run. I woul...

3 years 前 | 2 个回答 | 1

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Semilog plot that includes curve fit
I have used the curve fitting app to generate code to plot the data and the curve fit. I am new to MatLab but it looks like the ...

3 years 前 | 1 个回答 | 0

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Semilog plot in curve fitting tool
I am new to using the curve fitting tool. I have some data that I want to fit a curve to. I have clicked on the curve fitting ...

3 years 前 | 1 个回答 | 0

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Ignore zero values when searching for minimum value in column of matrix
I have the following code to find the minimum value in the last column of matrix cANALY: [tnValueAnaly, tnRowAnaly] = min(cANAL...

3 years 前 | 1 个回答 | 0

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提问


Find the maximum value of a column in a table
I have a spreadsheet that is read into a Matlab table. I need to get the maximum value in column 1. I thought the following wo...

3 years 前 | 1 个回答 | 0

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提问


Highest row number in a table
I am reading an excel spreadsheet into a table in MatLab. The number of rows and columns can vary. I need to find the maximum ...

3 years 前 | 1 个回答 | 0

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提问


Scan a row and replace any values equal to zero
I need to replace any zero values in the columns of a specific row, i +1, of a matrix, cA, with a specific value, say 1E-07. How...

3 years 前 | 1 个回答 | 0

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Sum of Least Squares
I have a table, Check, where I would like to subtract column 6 from column 5 (to obtain a residual) and then square the residual...

3 years 前 | 2 个回答 | 0

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提问


Dimensions of arrays being concatenated are not consistent.
I have no idea why I am getting an error in the following code: FluorDataInd = round(i/TimeFactor)+1 x=[ConcValues{1,1} Co...

3 years 前 | 1 个回答 | 0

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提问


Select a record from a table where an exact value is not provided
I have a table which I will be loading with Excel data (I haven't ever done that, but I think I can just paste data in). My que...

3 years 前 | 1 个回答 | 0

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提问


Initializing all rows with one set of values in one half and another set in the other half
The following line of code works for initializing the first row of an array: cA(1,:)=[cA0*ones(1,(N-1)/2+1),Kw/cB0*ones(1,(N+1)...

3 years 前 | 2 个回答 | 0

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已回答
Retrieve curve fit coefficients
I tried using coeffvalues, but all it does is store a bunch of text including the values that I want in a 1x1 something or other...

3 years 前 | 0

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Retrieve curve fit coefficients
I am using a 4PL function written by someone and available from a MatLab search. I don't understand how to store the curve fitt...

3 years 前 | 2 个回答 | 0

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stop execution of code to check results
Is there a way to stop code from executing so that results can be checked. For example something like if i == 100000 Stop...

3 years 前 | 3 个回答 | 0

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Set upper and lower bounds of for loop
I would like to set the upper and lower bounds of a for loop based on the values of simulation parameters. I'm not sure how to...

3 years 前 | 1 个回答 | 0

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提问


How to handle NAN when summing
I have the following code: for k = 1:N W(i,k)=W1*(cB(i,k))^W2; Fluor(i,k)= cB(i,k)*W(i,k)*dx; end FL = su...

3 years 前 | 1 个回答 | 0

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How to sum a portion of a row in a table and get a single value
How do I sum a portion of a row in a Matlab table and get a single value? For example assume that the row number is i and the c...

3 years 前 | 1 个回答 | 0

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提问


if statement with greater than and less than
The following doesn't seem to be working as intended: if 0 <= MBPosition <= 2*Delta ; Even though MBPosition is within the ran...

3 years 前 | 2 个回答 | 0

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提问


if statement for two arrays
I am programming a chemical reaction. I want to make sure that the amount of product produced does not exceed the amount of ava...

3 years 前 | 1 个回答 | 0

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提问


Run "if" logic on a row
I have the following code for the reaction interface between acid and base (A-acid, B-base,S-salt): dS=k1*cA(i+1,:).*cB(i+1...

3 years 前 | 1 个回答 | 0

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Matlab less than comparison
The Matlab documentation is confusing me. I want to test each cell in a specific row of an array (cA). If that cell has a valu...

3 years 前 | 2 个回答 | 0

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Include value requirement in array multiplication
I currently have the following line of code: dS=k1*cA(i+1,:).*cB(i+1,:)*dt dS is the amount of product S resulting from a reac...

3 years 前 | 2 个回答 | 0

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