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Christian Mathiesen


Aarhus University, Institute of Geoscience

Last seen: 2 years ago |  Active since 2020

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Alternative to scatter plot
I have a 3x100k matrix of scattered XYZ data over an an area that I wish to plot. So far I have been using scatter plot to visua...

2 years ago | 1 answer | 0

1

answer

Question


Inverse distance weighting based on direction
This problem is a bit specific, so I'll try to be as clear as I can. I have 1554 points along the coast of Greenland where mater...

3 years ago | 1 answer | 0

1

answer

Question


Boundary/polygon around coastline of Greenland
I have a big dataset of the topography of Greenland. x and y are in stereographic coordinates, with x being a vector of length 1...

3 years ago | 2 answers | 0

2

answers

Question


Interpolating over a grid
Hello. I have a grid of x and y coordinates and I would like to interpolate some z values over this grid. The grid constitues an...

3 years ago | 1 answer | 0

1

answer

Question


Using griddata with two points
I have three datasets, containing x, y and z data. The datasets contains two, seven and fourteen points respectively. My goal is...

3 years ago | 1 answer | 0

1

answer

Question


Locating z-values at certain x-values
Hi. I have a 3643x3 matrix containing x and y positions, as well as depth of seafloor depth along a seismic line in the Greenl...

3 years ago | 1 answer | 0

1

answer

Question


Calculating the error between true point and interpolation
Hi. I have 35 points where x is distance in meters, and z is seismic depth in seconds. I have made a 1d spline and k-nearest int...

3 years ago | 1 answer | 0

1

answer

Solved


Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

4 years ago