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**Content Feed**

Question

Find first non NaN element in a column of a matrix

Hi, I have a realtively large Matrix with time series data. each column stands for one series. given a variable that defines ...

6 years ago | 3 answers | 0

### 3

answersQuestion

Changing number of dates shown on xaxis

Hi, I have a plot with time series data of roughly 2 years. When I plot the series, I insert datetick('x','mmmyyyy'); to Format ...

6 years ago | 1 answer | 0

### 1

answerQuestion

changing axis values into names

Hi, I have the following Problem: I created a variable that is either 1 or -1, depending on other factors, which are irrel...

7 years ago | 2 answers | 0

### 2

answersQuestion

add circles to starting and ending point of a line

Hi, I am looking for a way to add a circle at both Ends of a line, as done manually in the Picture shown in the Appendix. ...

7 years ago | 2 answers | 0

### 2

answersQuestion

draw lines based on coordinates

Hi, I am looking for a way to add a line to a convex function based on the coordinates. I have a convex funtion going from...

7 years ago | 1 answer | 0

### 1

answerQuestion

3D plot including different colors

Hi, I'd like to create a 3-D Chart and be able to manipulate the axis in order to see the Dates. the code I completed so far ...

7 years ago | 1 answer | 0

### 1

answerQuestion

convert number to string but keep it the same as it is

Hi, I have a Matrix containing different time series and I gave them numbers (2000001, 2000002,2000003 etc.) and I would lik...

7 years ago | 3 answers | 0

### 3

answersQuestion

add legend of a plot when names of each time series are saved in a vector

Hi, I have the following Problem: The matrix I would like to plot containes the Dates in the first column and the differe...

7 years ago | 1 answer | 0

### 1

answerQuestion

vlookup equivalent function in matlab to add data where an input exist

Hi, I have the following problem and did not find any solution that is helping me to get the problem fixed. First there i...

7 years ago | 1 answer | 0

### 1

answerQuestion

add column to matrix that allows to identify series

Hi, I have the following problem: I constructed a matrix from several timeseries and I need to add a column to the matrix ...

7 years ago | 2 answers | 0

### 2

answersQuestion

create a new matrix for every iteration of a loop

Hi, I have the following problem: for k=1:10 varOfInt=strcat('mydata',num2str(k)) genvarname(varOfInt) end D...

7 years ago | 1 answer | 0

### 1

answerQuestion

error message ()-indexing must appear last in an index

Hi, I have the code below and when I try to run it, I get the error message ()-indexing must appear last in an index expressi...

9 years ago | 1 answer | 0

### 1

answerQuestion

function I do not really understand, could somebody give me a hint?

Hi, I have received a function which consists of several furnctions, but I have some problems to see what is going on here. ...

9 years ago | 2 answers | 0

### 2

answersQuestion

do not display value on the axis

Hi, I am looking for a code that allows me to plot a figure where there are no value displayed on the x axis I tried to us...

9 years ago | 2 answers | 0

### 2

answersQuestion

command for which the label on the x axis is not shown

Hi, I am looking for a command so that there are no values on the x axis shown. I tried this; set(gca,'xtick',[]) ...

9 years ago | 3 answers | 0

### 3

answersQuestion

plot data instead of number on the xaxis

Hi, I have the following problem: I would like to plot two time series in the same graph which is working fine, but I would like...

9 years ago | 1 answer | 0

### 1

answerQuestion

get an error message by running a large code

When I run a large code, I get the following error message, unfortunately I have no idea where it could come from or what I need...

9 years ago | 1 answer | 1

### 1

answerQuestion

using vectors as inputs for a function

Hi, I have this function here: function HestonCallPriceF x0 = [1.1768 0.082259 0.83746 -0.54589]; %parameters: ...

9 years ago | 1 answer | 0

### 1

answerQuestion

plot the distribution of a dataset

Hi, I have a time series and I would like to plot the pdf of an empirical and the lognormal distribution with the same mean a...

9 years ago | 1 answer | 0

### 1

answerQuestion

show month and year of a dataseries on the x axis

Hi, I have this code which displays the respective year on the x axis %SPX SPX=dataSet(:,2); %VIX VIX=dataS...

9 years ago | 2 answers | 0

### 2

answersQuestion

code does gives me an error message if I execute it with F5, but if I mark the full code and press F9, its working

Hi, I have this code here: S0=10 K=10 T=0.2 Tt=0.05 Vola=0.2 r=0.02 x=[0:0.001:20]; y1=bl...

9 years ago | 1 answer | 0

### 1

answerQuestion

show all rows where value in column 13 is equal to a specific number

Hi, I know that I can display all elements of the first column of a matrix that are larger than 1500 by using this command:...

9 years ago | 1 answer | 0

### 1

answerQuestion

delete rows based on whether the day is a wednesday or not

Hi, I have a dataset with 18 columns and thousands of rows. In column 6 is always the date of the respective row. I would now...

9 years ago | 1 answer | 0

### 1

answerQuestion

select data from an existing dataset based on the weekday

Hi, I have a matrix with 18 columns and over 100'000 rows and in each rows there are stored different characteristic for a sp...

9 years ago | 1 answer | 0

### 1

answerQuestion

random walk in matlab without the econometrics toolbox

Hi, I am looking for a way to create a random walk in matlab without having the financial toolbox

9 years ago | 1 answer | 0

### 1

answerQuestion

change scales from the x axis

Hi, I intend to do a chart with two yaxis, the code is the following: dates=datenum(dataSet(:,1)); %SPX SP...

9 years ago | 1 answer | 0

### 1

answerQuestion

find out in which row an element is equal to a specific number

hi, I have the following problem: I have a matrix with 20 columns and over 200'000 rows. somewhere in this matrix there se...

9 years ago | 5 answers | 0

### 5

answersQuestion

add elements to an existing vector

Hi, I have a vector where I would like to add 5 NaN at the beginning. When I am doing it for one NaN, it's working fine, bu...

9 years ago | 2 answers | 1

### 2

answersQuestion

changing the axis of a plot in a way that the data series starts at x=0 at a point at one point on the y-axis and ends on the right end of the plot

hi, I have this code: dates=datenum(VIXdate) y=VIX plot(dates,y) %datevc divides the date in diff...

9 years ago | 3 answers | 0

### 3

answersQuestion

using a function that is similar to polyfit but with two linear terms

Hi, I am looking for a matlab function that is working similar to polyfit, but where I can use two different input function b...

9 years ago | 2 answers | 0