Chad Greene
The University of Texas at Austin
1,193 total contributions since 2012I 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.
Chad Greene's Badges
Accept 20 answers given by other contributors
Awarded to Chad Greene on 20 Jul 2017
Contribute at least one answer each month for 36 consecutive months
Awarded to Chad Greene on 20 Jul 2017
Answer 10 questions that were unanswered for more than 30 days
Awarded to Chad Greene on 20 Jul 2017
100 of your answers have been accepted
Awarded to Chad Greene on 20 Jul 2017
Provide your first answer ever to someone else's question
Awarded to Chad Greene on 20 Jul 2017
using 'fit' to add a trend line to series of scatter points
That is the correct first-order least-squares fit. But I think in your plot the '.' marker on the far left side is coincident wi...
14 days ago | 0
| accepted
Question
2D gaussian filter with a variable sigma
I have a large gridded dataset I'd like to lowpass filter. The catch is, need to specify a different sigma value for each pixel ...
16 days ago | 1 answer | 0
1
answerHow can I get a mask matrix from a fill?
Perhaps you want to use inpolygon to get a mask of grid cells within the polygon?
1 month ago | 0
How can I make an image with both ocean and land information?
This is very easy with the Climate Data Toolbox for Matlab! First, plot the base image with earthimage, then overlay it with a p...
1 month ago | 0
How can I interpolate an ocean's variable without interpolate the continents?
You can use the island function in the Climate Data Toolbox for Matlab to determine which grid cells are land and which ones are...
1 month ago | 0
Can anyone help plot the India map showing land and oceans, without using mapping toolbox ??
For this you can use the earthimage function in the Climate Data Toolbox for Matlab. It does not require the Mapping Toolbox.
1 month ago | 0
| accepted
How to perform EOF
I think the easiest way is with the eof function in the Climate Data Toolbox for Matlab. Check out the documentation, it describ...
1 month ago | 0
Globe display issue - need opaque sub-surface
For the globe functions in the Climate Data Toolbox for Matlab I had to include one called globefill, for that very purpose. If ...
1 month ago | 0
How can you plot lines of latitude and longitude on a globe without using the mapping toolbox ?
I turned my answer into a collection of functions called globeplot, globesurf, globegraticule, globeborders, etc. which you can ...
1 month ago | 0
how to write data on grid in a plot?
That looks like a heatmap chart. However, a 181x361 grid of text values will probably be illegible. On most screens that's only ...
1 month ago | 0
How to calculate the area of each grid cell?
The easiest way is to use the cdtarea function in the Climate Data Toolbox for Matlab. For gridded coordinates Lat,Lon, syntax i...
1 month ago | 0
| accepted
Plot a point of my gridded map
If you know the grid indices, it would just be sst1 = squeeze(sst(row,col,:)); where the corresponding geo coordinates would...
1 month ago | 0
Writing a loop to calculate a seasonal cycle and then plot the seasonal cycle?
Check out the season and climatology functions in the Climate Data Toolbox for Matlab. The functions make it easy to extract sea...
1 month ago | 0
Can't plot a trendline
Check out the polyplot function in the Climate Data Toolbox. If you define the x and y data, plotting a least-squares trend line...
2 months ago | 0
Help with plotting world grid climate variable lat/lons
Hi Macarena, I wrote the recenter function in the Cimate Data Toolbox to do exactly what you want to do. It lets you move a ...
2 months ago | 0
Submitted
The Climate Data Toolbox for Matlab
A set of low-level functions and tutorials for analyzing and displaying Earth science data.
2 months ago | 67 downloads |
How to apply hatched region to a polar map
For anyone who wants to do this with Antarctic Mapping Tools, you may be able to use my stipple function. For a lat,lon grid and...
2 months ago | 1
Submitted
tile
Easily determine indices to break a large 2D matrix into smaller tiles.
3 months ago | 0 downloads |
Submitted
cmocean perceptually-uniform colormaps
Perceptually-uniform colormaps inspired by oceanography
3 months ago | 175 downloads |
How can I create a gif that plays only once?
Use my gif function! Just type gif('myfile.gif','LoopCount',1) for the first frame and then gif to write each subse...
4 months ago | 1
How do I filter my data points without using smoothdata?
What about movmean to smooth the data, then interp1 to pick out the 5 points you want?
4 months ago | 0
How do I read an image file in .fits format and convert it to.png or .tiff?
You should be able to read it with fitsread and then save it to png or tiff with imwrite.
4 months ago | 1
How to create a only a time vector starting 13:15:00 to 20:59:00 with 1 minute interval? R2016a
This is a datetime for today, starting at 13:15 and going to 20:59, in 1 minute [1/(24*60)] intervals. t = datetime(2018,12,11...
4 months ago | 0
| accepted
time series comparison metric
The simplest way is just to compare the standard deviations of each signal: st1 = std(d1); st2 = std(d2); Although that ap...
4 months ago | 0
| accepted
Make x axis ticks and extent match
You're on the right track. If you want all the xticks to be the same, then you'll have to set them all to the same values. Curre...
4 months ago | 0
Why the EOF gives the total of 99.9
This line in caleof is the culprit: expvar(iN)=fix((dsum(iN)*100/sum(dsum))*10)/10; The fix function rounds down. The part th...
5 months ago | 0
How to change figure size?
The paper size options are for printing, so they don’t change the size of the figure. The ‘Position’ property sets the size of ...
5 months ago | 14
| accepted
How do I create a color bar to correspond to my jet color scheme?
Try this: Plot some data: surf(peaks) Change the colormap*: colormap(jet) Add a colorbar and put a label on it: cb = ...
5 months ago | 0
| accepted
creating subplot from function
Looks like instead of |x| you meant to call that variable |fname|? If so, something like this: fname = {'fname1.txt','fname...
5 months ago | 0
Submitted
Antarctic Mapping Tools
A toolbox for analysis and display of Antarctica-related data
6 months ago | 38 downloads |
