Tidal analysis in python can be quite difficult. During my MatlabTM times I used the t_tide a lot and I end up comparing other packages to t_tide.

The only python alternative one that comes close to t_tide is tappy.

Tappy seems to be a good one, but it was build ...

Since the last post I've been playing more with PyEphem. One of the many interesting features of this astronomical computations module is the ability to read external orbital elements.

Here is an example on how to create an ISON comet object.

We can get the ISON comet orbital data ...

I'm teaching tides in a Waves and Tides course and, every now and then, I find myself creating new figures to show the students. This post is to show how I created a "moon phase path" using pyephem. The final plot was based on this example.

Just for fun ...

There has been a lot of buzz around the python ggplot module recently. I must confess that the original (ggplot2 for R) for R is not a tool in my utility belt. However, every now and then I find myself teaching it to biologist/ecologist that are stuck with R ...

We already used the brewer2mpl module in previous posts. However, we did not showed it in detail. This post is just to draw attention to this interesting module that can access the Colorbrewer2.0 website and convert colormaps directly to matplotlib format.

Let's start importing by cartopy, iris, pyplot ...

Alternative dataset to plot the Brazilian political boundaries.

We already saw some of the advantages of cartopy over other mapping tools. However, as a Brazilian, I really miss a more up-to-date political boundary than those present in tools like GMT, m_map, and basemap.

Luckily cartopy can Read On ↵

The previous post I've mentioned both iris and cartopy modules, and talked a little bit on the use of iris to download, read and plot a gridded data-set (A.K.A. the iris cube). Here I'll show a little bit more about cartopy.

The best feature so far ...

Learning how to use iris cubes and cartopy plotting.

I'm experimenting with iris cubes and cartopy plotting. Both libraries are part of the SciTools package developed by the UK Met Office:

They are ...

This post is a quick example on how to use download several hdf 4 files by "scrapping" NASA's server.

Manually downloading several hdf files is, most of the time, impractical. Some time ago I helped a friend with a similar problem with a simple python script. This post is ...

This post is a quick example on how to use the World Ocean Atlas database.

Continuing the plots from the previous post we will produce a figure to show the surface salinity. We will use the same annual climatology from before.

(BTW: Check the images produced by the Aquarius satellite ...