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Chad Greene


NASA Jet Propulsion Laboratory

Last seen: 6 dagar ago Active since 2012

Followers: 3   Following: 0

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I am interested in the floating ice shelves that fringe East Antarctica. My current work is toward building a better understanding of how climatology influences glaciology via oceanography. I also have some experience with the acoustics of gas hydrates and oceanic methane bubbles. Homepage: www.chadagreene.com Professional Interests: Antarctic ice shelf dynamics, sea level rise, underwater acoustics, methane hydrates Note: I will not do your homework for you and I will not respond to emails directing me to a question posed on the Answers forum.

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Question


Labeling image region properties
I have a binary image, and I'd like to create a corresponding mask that contains a value in each pixel for the area of each regi...

ungefär 2 månader ago | 1 answer | 0

1

answer

Question


External monitor crashes MATLAB R2023b
Using OSX 13.6.3, whenever I connect or disconnect my external monitor, all text in the MATLAB editor goes blank and I get a spi...

3 månader ago | 1 answer | 0

1

answer

Answered
Defining the central longitude in Arctic borders in the Arctic Mapping Tool
Try this. Into the Command Window type open arcticborders Then find the line where it loads the border data. Try adding this...

5 månader ago | 0

| accepted

Question


How to download multiple files from a website
This question has been asked many times in various ways on this forum, but I've never found a simple answer to this very simple ...

5 månader ago | 1 answer | 0

1

answer

Answered
How to plot locations on a polar stereographic map?
With Antarctic Mapping Tools, use plotps. Use plotpsn in the Arctic Mapping toolbox for northern hemisphere.

7 månader ago | 3

| accepted

Submitted


Tide Model Driver (TMD) version 3.0
Tide Model Driver for MATLAB, version 3.0

9 månader ago | 64 downloads |

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Question


R2022b does not start after Update 3
Today I opened R2022b on my Mac OS 12.6.1, and after working for a few minutes I noticed that Update 3 is available for this MAT...

mer än ett år ago | 2 answers | 0

2

answers

Submitted


Lambert azimuthal equal-area projections
MATLAB functions for LAEA projections.

mer än ett år ago | 2 downloads |

Question


Opening multiple instances of MATLAB causes endless folder access errors
Whenever I try to open two instances of MATLAB, I run into an endless loop of error windows. For example, if I'm running 2022b a...

mer än ett år ago | 1 answer | 0

1

answer

Question


Text in editor window suddenly vanishes in R2022b.
I've run into lots of strange behavior using R2022a and R2022b on my MacOS Monterey 12.6.1, and until now it's been mostly just ...

mer än ett år ago | 1 answer | 0

1

answer

Submitted


crameri perceptually uniform scientific colormaps
Perceptually uniform scientific colormaps from Fabio Crameri.

mer än ett år ago | 85 downloads |

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Question


Missing text objects when exporting graphics in R2022b
Since upgrading to R2022b, I've repeatedly run into an inssue in which text objects, legends, titles, etc do not get printed, or...

mer än ett år ago | 1 answer | 1

1

answer

Answered
Changing the orientation Arctic Projection maps
I typically bypass the Matlab Mapping Toolbox for stereographic projections, because the functions are kind of clunky and slow. ...

mer än ett år ago | 0

Answered
Extract coordinates from a geopolyshape
@Sergey Kostrukov I think I found a working solution. The m_shaperead function in M_Map can handle PolygonZ and PolyLineZ data. ...

mer än ett år ago | 0

Answered
Duplicating an entire vector
You almost got it. Try repmat(A,[1 3])

mer än ett år ago | 0

| accepted

Question


How to read modern shapefile data
It seems increasingly common these days that data providers are saving shapefile data as PolygonZ or PolyLineZ data, rather than...

mer än ett år ago | 2 answers | 1

2

answers

Question


Glitchy Command Window behavior in R2022a and R2022b
I've got a MacOS 12.6.1, and I've noticed since I upgraded to R2022a that the cursor in the Command Window no longer behaves pre...

mer än ett år ago | 0 answers | 2

0

answers

Question


parpool failed to start
I'm trying to start a parallel pool in Matlab 2020b, but the pool repeatedly fails to start. Can anyone offer any guidance? Here...

mer än ett år ago | 0 answers | 0

0

answers

Question


calling a built-in private function
I'm using stream2 for a big problem that takes about a week to run on a high-performance computer. The profiler tells me that mo...

mer än ett år ago | 1 answer | 0

1

answer

Answered
Mapshow : attribute colors to polygons according to ID
Try this. Define a list of colors, and plot each gridcode region seperately. climate = shaperead('c1976_2000.shp'); % List...

mer än ett år ago | 0

| accepted

Answered
Is it possible to define colormap ranges or merge colormaps?
Try concatenating colormaps, like this. Below I'm using my cmocean colormaps, which are available on File Exchange, but you can ...

mer än ett år ago | 1

| accepted

Question


stream2 fails if coordinates are single precision?
I've encountered a strange behavior with stream2 which fails silently if any input coordinates are single precision. It looks li...

mer än ett år ago | 1 answer | 0

1

answer

Answered
Boundary/polygon around coastline of Greenland
I've just added a 'gl' option to plot Greenland's grounding line using BedMachine's mask. https://github.com/chadagreene/BedMach...

ungefär 2 år ago | 1

Question


Unfamiliar .D0 number syntax
I've inherited some Matlab code that was previously adapted from Fortran, and the Matlab code has a syntax I'm not familiar with...

ungefär 2 år ago | 1 answer | 0

1

answer

Submitted


Arctic Mapping Tools
Or: Antarctic Mapping Tools for Matlab, Greenland Edition

mer än 2 år ago | 25 downloads |

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Question


XData and YData from area chart
I'm using the area function to create a stacked area chart of hundreds of time series. After plotting my data via h = area(t,Y...

mer än 2 år ago | 1 answer | 0

1

answer

Answered
Can anyone help me with the a tentative guide on how to average across the two dimensions of a 3d array, and loop it across 86 timesteps?
If you have a temperature data cube T whose dimensions correspond to lat x lon x time, the simplest way to get an 86x1 array of ...

mer än 2 år ago | 1

| accepted

Answered
Better “centerpoint” than centroid of a concave polygon
I added a polycenter function to do exactly what you need in the Climate Data Toolbox for Matlab. If you have a shapefile, the...

mer än 2 år ago | 0

Answered
What should go in a next-generation MATLAB X?
If I could design Matlab from scratch I'd get rid of semicolons to suppress output, and make element-wise operations the def...

mer än 2 år ago | 0

Answered
What should go in a next-generation MATLAB X?
I'd like to define ranges using square brackets for inclusive and rounded brackets for exclusive. So insead of if x>=20 & x<30...

mer än 2 år ago | 0

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