Chad Greene

NASA Jet Propulsion Laboratory

Last seen: 15 Tage vor | Aktiv seit 2012

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

15 Tage vor | 1 Download |

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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...

19 Tage vor | 1 Antwort | 0

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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 ...

20 Tage vor | 1 Antwort | 0

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

24 Tage vor | 62 Downloads |

Frage

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...

26 Tage vor | 1 Antwort | 0

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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. ...

28 Tage vor | 0

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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. ...

28 Tage vor | 0

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

28 Tage vor | 0

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Frage

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...

28 Tage vor | 1 Antwort | 1

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Frage

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...

etwa ein Monat vor | 0 Antworten | 2

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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...

3 Monate vor | 0 Antworten | 0

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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...

3 Monate vor | 1 Antwort | 0

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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...

3 Monate vor | 0

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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 ...

3 Monate vor | 1

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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...

3 Monate vor | 0 Antworten | 0

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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...

8 Monate vor | 1

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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...

9 Monate vor | 1 Antwort | 0

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

11 Monate vor | 17 Downloads |

Frage

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...

etwa ein Jahr vor | 1 Antwort | 0

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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 ...

etwa ein Jahr vor | 1

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Beantwortet
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...

etwa ein Jahr vor | 0

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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...

etwa ein Jahr vor | 0

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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...

etwa ein Jahr vor | 0

Beantwortet
How can I convert a shapefile boundaries to lat and lon?
If it's a standard map projection, use projinv.

etwa ein Jahr vor | 0

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Beantwortet
How to find a figure's centroid inside a polyshape?
Also answered here, but reposting my answer in case anyone stumbles upon this thread. I just ran into this problem when trying...

etwa ein Jahr vor | 0

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Better “centerpoint” than centroid of a concave polygon
I just ran into this problem when trying to place a text label in the middle of a crescent-shaped ice shelf. The centroid or the...

etwa ein Jahr vor | 1

Beantwortet
Stereographic plot of Sea Surface Temperature Data around Antarctica.
Hi Ravi, There are a couple of ways to do this. Here's one way: Turn your vectors of latitude,longitude coordinates into 2D ...

etwa ein Jahr vor | 0

Gesendet

gridbin
A MATLAB function for gridding large datasets of scattered data.

mehr als ein Jahr vor | 5 Downloads |

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maskoverlay
A MATLAB function to easily overlay a mask.

mehr als ein Jahr vor | 1 Download |

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fast-ice
Matlab functions for loading Alex Fraser's fast ice dataset.

mehr als ein Jahr vor | 1 Download |

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Chad Greene

NASA Jet Propulsion Laboratory

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