# Alfredo Scigliani

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**Feeds**

Question

How to find the width of a peak where there is no actual data, just individual points?

I am trying to obtain the width at the half maximum location of the peak displayed in the figure. I have already found the locat...

11 months ago | 1 answer | 0

### 1

answerQuestion

How to fit a biexponential decay function

I am having trouble fitting this biexponential decay function, any suggestions? Maybe lsqcurvefit is not the best for this purpo...

1 year ago | 2 answers | 0

### 2

answersQuestion

How to average a dense set of data using desired resolution

I have this big set of data that clearly follows a trend and I would like to average all the points every 1 second or whichever ...

1 year ago | 1 answer | 0

### 1

answerQuestion

How to fit data on a specific region, using lsqcurvefit or any other?

I am trying to use lsqcurvefit to fit 4 parameters, I am usually able to do it but in this problem, the fitting function is only...

1 year ago | 1 answer | 0

### 1

answerQuestion

How to create a custom colormap ("seismic" from python)

I have read the colormap helpdocs but I am in need of a bit of help. I am not so familiar with RGB codes for colors, but I am tr...

1 year ago | 2 answers | 0

### 2

answersQuestion

How to shift experimental data (not a function) in a loglog plot?

I am trying to shift data just for viewing purposes, the actual values would not be relevant. I just don't want the data to over...

1 year ago | 3 answers | 0

### 3

answersQuestion

Select specific area of a DICOM file

I am trying to select the area between the two circles, everything inside the inner circle and outside the outer is not of inter...

1 year ago | 1 answer | 0

### 1

answerQuestion

Axis label getting cutoff in plot with multiple axis

I am trying to display a label to each axis, the only problem is the top x axis, the label is getting cutoff. If I put the image...

1 year ago | 1 answer | 0

### 1

answerQuestion

How to generate a matrix with desired pattern using nested for loops?

I need to generate a 5x5 matrix like this one using nested for loops. My first thought is to generate a zeros or ones matrix...

2 years ago | 1 answer | 0

### 1

answerQuestion

Fitting 4 parameters with constraints

I am trying to fit a function to a data set in order to fit 4 parameters. I have been using lsqcurvefit because it is the only w...

2 years ago | 1 answer | 0

### 1

answerQuestion

How to constraint the values of fitted parameters with lsqcurvefit?

I am fitting a multiexponential function to a data set, but the solutions that lsqcurvefit is finding are away from realistic va...

2 years ago | 2 answers | 0

### 2

answersQuestion

How to plot pixel intensity as a function of pixel position (beginner)

Hi I am basically a beginner with imaging processing, I have seen many demos about analyzing the rhinos.avi video but as a begin...

2 years ago | 1 answer | 0

### 1

answerQuestion

How to skip a data set in the legend of a plot?

I have 6 data sets in a plot for which I only want to show 3 in my legend, because the other 3 are just fits. If anybody can sho...

2 years ago | 1 answer | 0

### 1

answerQuestion

How to have an empty space in a vector for operations

I would like to have a vector with an blank space, not a NaN, simply a blank space. Because then I need to take the average and ...

2 years ago | 1 answer | 0

### 1

answerQuestion

How to identify the position in which a value is NaN

I want to be able to identify the position in which a value is NaN If I have: x = [1 NaN 3 4 5 NaN 7 8...

2 years ago | 1 answer | 0

### 1

answerQuestion

How to remove values from a data set to make it a specific length?

I will explain myself better: If I have xdata = [ 1 2 3 4 5 6 7 8 ] ydata = [ 1 2 3 4 5 6 ] if I want to plot(xdata,ydata...

2 years ago | 1 answer | 0

### 1

answerQuestion

Fit 2 parameters with lsqcurvefit including an integral term

Hi, I am trying to fit this function to my data. The function has 2 unknown parameter D1 and D2, everything else is known. I wan...

2 years ago | 2 answers | 0

### 2

answersQuestion

Import values from excel to use it as content

I know that this may sound complicated, but I will give it a shot anyway. I using the import data feature to pull data from an e...

2 years ago | 1 answer | 0

### 1

answerQuestion

How to format scientific notation to have the same power?

I know this might be dumb but it is messing me up so much. I have a table with data that is in scientific notation. I would like...

2 years ago | 1 answer | 0

### 1

answerQuestion

Fit power function to data (optimization)

I am trying to fit a general power function ydata=a*(xdata)^b (where a and b are fitting parameters, xdata and ydata are the g...

2 years ago | 2 answers | 0

### 2

answersQuestion

How to fit a function with an integral term to a set of data?

I have this set of data of 32 points (xdata and ydata) and a function that I am trying to fit. This function includes an integra...

2 years ago | 2 answers | 1