# Davide Cerra

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**Content Feed**

Question

Change date format in vector

Hello i would like to uniform 2 different date format in a single vector: 4/1/2019 12:45:00 AM and 15/6/19 18:10 how c...

2 years ago | 1 answer | 0

### 1

answerQuestion

Fill date gap and fill missing data wit NaN

Hello, i have to fill the gaps of these type of data: Date Temperature 30/4/19 20:10 15.75...

2 years ago | 1 answer | 0

### 1

answerQuestion

Simple line to XML format.

Dear Matlab users, i'm trying to create a simple XML file from a line given by two points. x(1)=1; y(1)=1; x(2)=1; y(2)=...

2 years ago | 0 answers | 0

### 0

answersQuestion

store variables in a for loop

Hello, i m trying to obtain a set of coordinates for this: function [x, y] = gencircle(xo,yo,r,N) x=(xo+r*cos(theta))'; y=(y...

3 years ago | 1 answer | 0

### 1

answerQuestion

For loop and coordinates

hello, the gencircle function generates the coordinate for an inscript polygon. But off course in the for loop i obtain only th...

3 years ago | 1 answer | 0

### 1

answerQuestion

how to calculate the area under a curve?

#£x=[0:100]; y=30-60*cos(2*pi/100*x); plot (y); Hello! how con i calculate the area under the curve above? i would also lik...

3 years ago | 3 answers | 1

### 3

answersQuestion

Extract fitting results in a vector

Hello i would like to extract a vector from the fitting results. the vector length is 360. Ph=200; Pc=100; w=220; x=[0 w/...

3 years ago | 0 answers | 0

### 0

answersQuestion

coordinates matrix from rectangle grid

i have the two sides of a rectangle and the distance of internal point of a grid as input. how can i obtain the coordinates of t...

3 years ago | 0 answers | 0

### 0

answersQuestion

generate grid and coordinates in a rectangle

i have sides of a rectangle as input and i want to generate a grid that gives as output the coordinates of the internal points. ...

3 years ago | 1 answer | 0

### 1

answer### 2

answersQuestion

Plot two vector. hello i have 2 vector example (1,2,3,4,5) and (5,4,3,2,1) i wat to obtain the coordinates (1,5) (2,4) (3,3) (4,2) (5,1).

hello i have 2 vector example (1,2,3,4,5) and (5,4,3,2,1) i wat to obtain the coordinates (1,5) (2,4) (3,3) (4,2) (5,1). and pl...

4 years ago | 1 answer | 0

### 1

answerQuestion

multiple vectors interpolation?

hello, i have 4 vectors and i want to fit all of them, how can i do it? simple example?

4 years ago | 1 answer | 0

### 1

answerQuestion

curve fitting area calculation?

how can i calculate the 2 separate areas of the graph? a= xlsread('Rosborg BEM.xlsx.','Sheet1','A2:A366'); figure %%allyear...

4 years ago | 0 answers | 0

### 0

answersQuestion

curve start and finish at [0 0] [0 365] respectively?

how can i impose the fitting curve to start from [0 0 ] and finish in [0 365] ? possibly using curve fitting toolbox?

4 years ago | 1 answer | 0

### 1

answerQuestion

fitted curve start from zero?

How can the fitting curve can stat from [0,0]?

4 years ago | 1 answer | 0

### 1

answerQuestion

from a=[1 2 3 4] to b=[1 1 2 2 3 3 4 4]

code: from a=[1 2 3 4] to b=[1 1 2 2 3 3 4 4]

4 years ago | 1 answer | 0