Asked by Samaneh Arzpeima
on 4 Jun 2018

Hello Everybody

I have 3 vectors with 95000 rows. X, Y,and T(time of rupture). Now I need to draw contour using these 3 vectors.but it sounds there are duplicates data(an error message say so! I guess there might be some data with same X and Y ) . I would like to removes them before drawing contour plot. Can anyone help. Thank You for your time.

Answer by Varun Garg
on 4 Jun 2018

Hi Samaneh,

My understanding of your question is that for the vectors X and Y you want to find values which are common in both.

For that you can use

intersect

Example snippet:

x=[1 2 3 4 5 10 20 30];

y=[4 5 10 100 90 22 33];

[z ix iy]= intersect(x,y)

x(ix)=[]

y(iy)=[]

Samaneh Arzpeima
on 5 Jun 2018

vector1

X=rand(90000,1)

vector2

Y=rand(90000,1)

vector3

T=rand(90000,1)

here,point(X,Y) refers to a grid coordinate,

if

X(i,1)=X(j,1)=X(k,1)...

Y(i,1)=Y(j,1)=Y(k,1)...

I need to keep just one of the repeated grid point,for example keep the row(i), and delete row(j) and (k).when I have same grid data even with different T.

-------------------------------

what I actually have

vector1 d.X 90000*1 coordinat

vector2 d.Y 90000*1 coordinat

vector3 d.Dz 90000*1 time of slip for each grid

I wrote something like this to get the graph that I attached here, I ignored the repeated data point for this graph though.

scatter(d.Y,d.X,5,d.Dz);

[X,Y] = meshgrid(linspace(min(d.Y),max(d.Y),80), linspace(min(d.X),max(d.X),80));

hold on

[C,h]=contour(X,Y,griddata(d.Y,d.X,d.Dz,X,Y),[10 8 6 4 1 ])

I want to delete the repeated data and replot

if I am not clear ,excuse me,and just ignor.sorry for the time

Varun Garg
on 5 Jun 2018

Okay. That's a bit better explanation. One more doubt If

X(i,1)=X(j,1)=X(k,1)

and

Y(i,1)=Y(j,1)=Y(k,1)

Should they both hold true together for me to keep only i row and delete j,k.. Or any of (1) or (2) hold true, I should delete j,k.. from both X and Y?

Samaneh Arzpeima
on 6 Jun 2018

Thamk you again

I just need one set of (x,y) to have one value of time or slip. for a point with coordinate lets say (x=2,y=3) if I have 3 value for time like

x y t

2 3 3

2 3 2

2 3 5

I want to keep point(2,3) with the lowest time, so I have to delete first and third row.

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