How to do normal distribution for same data?

Hello,

According with first example from here: https://www.mathworks.com/help/stats/normal-distribution.html

I wrote these lines below, but maybe i'm doing something wrong.

%Import front sonar for 30cm:
sonar_F_030 = readtable('sonar_F_030.csv');

%Split ranges from file
range = sonar_F_030.range;

pd = fitdist(range,'Normal');
mu1 = pd.mu;
sigma1 = pd.sigma;

x = (-3:.1:3);
y = normpdf(range,mu1,sigma1);

plot(x,y)

Error using plot
Vectors must be the same length.

How can I do normal distribution for these data;

Answer 1

[Star Strider]

Try something like this —

%Import front sonar for 30cm:
sonar_F_030 = readtable('https://www.mathworks.com/matlabcentral/answers/uploaded_files/1195733/sonar_F_030.csv')

sonar_F_030 = 950×2 table
     range       time  
    _______    ________

     0.3044    0.062361
     0.3044     0.12892
    0.30696     0.19563
    0.30376     0.26228
    0.30696     0.32898
    0.30376      0.3957
    0.30376     0.46234
    0.30376     0.52899
    0.30759     0.59565
     0.3044     0.66232
    0.30759     0.72895
    0.30312     0.79598
     0.3012     0.86278
     0.3044     0.92966
     0.3044     0.99618
     0.3012      1.0629

%Split ranges from file
range = sonar_F_030.range;

pd = fitdist(range,'Normal');
mu1 = pd.mu;
sigma1 = pd.sigma;

% x = (-3:0.01:3);
x = linspace(min(range), max(range)+0.01, numel(range));
y = normpdf(x,mu1,sigma1);

figure
plot(x,y)
grid

Make appropriate changes to get the desired result.

.

[RoBoTBoY]

Thank you very much!

[Star Strider]

As always, my pleasure!

Answer 2

[Torsten]

%Import front sonar for 30cm:
sonar_F_030 = readtable("https://de.mathworks.com/matlabcentral/answers/uploaded_files/1195733/sonar_F_030.csv");

%Split ranges from file
range = sonar_F_030.range;

pd = fitdist(range,'Normal');
mu1 = pd.mu

mu1 = 0.3035

sigma1 = pd.sigma

sigma1 = 0.0023

x = (0.29:.0001:0.315);
y = normpdf(x,mu1,sigma1);

plot(x,y)

[RoBoTBoY]

Thank you very much!