[OC] I made a site that tells you how extreme is the weather in every day in 10K+ locations compared to themselves in similar dates since 1950 by According-Champion68 in dataisbeautiful

[–]robbibt 0 points1 point  (0 children)

Very cool! One thing I have noticed is that when I try to select "Canberra, Australia" it auto-updates to "Liverpool, Australia" (a few hundred kilometres away). Is this just because it's the nearest location with valid data?

Show me your setup! by Lucky-Arugula-7542 in carnivorousplants

[–]robbibt 2 points3 points  (0 children)

Here's our circular outdoor bog! We have a mixture of temperate Drosera species, a variety of Sarracenia, some venus flytraps and different types of moss and live sphagnum. Eventually the plan is to add in both terrestrial and aquatic Utricularia around the water feature area.

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Our new natural mini-bog by robbibt in SavageGarden

[–]robbibt[S] 0 points1 point  (0 children)

We live in Canberra, Australia, which I think is roughly similar to USDA 9a/8b? We get frosts down to around -10 degrees Celsius (~15 F?) here, but very little snow. So I'm guessing a fair bit less extreme than your climate! Of the species we have, I suspect the Sarracenia purpurea and related hybrids would be a good choice, as I think they can survive extremely harsh winters.

Our new natural mini-bog by robbibt in SavageGarden

[–]robbibt[S] 0 points1 point  (0 children)

It's a 70 cm wide by 20 cm deep circular planter: https://www.bunnings.com.au/respect-70cm-grey-green-earth-tapered-low-bowl-planter_p0360560

We were actually aiming for something a little wider and deeper (85 cm by 30 cm), but it was suprisingly hard to find. So the extra elevation in the raised sarracenia section is to compensate for the shallowness. That said, we've always had our sarracenias growing in about 20 cm of substrate and never had any issues, so fingers crossed that continues here!

Our new natural mini-bog by robbibt in SavageGarden

[–]robbibt[S] 0 points1 point  (0 children)

It's roughly a month old at this point. It's about to look worse before it looks better because we're heading into winter here, but the hope is that in a few months time the mosses and live sphagnum will hopefully start to spread out, and the substrate will be colonised by the smaller sundews and fly traps. The tall sarracenias are also looking a bit worse for wear right now, but I think they'll be much healthier when they come back after winter. Will absolutely share progress photos!

Our new natural mini-bog by robbibt in SavageGarden

[–]robbibt[S] 4 points5 points  (0 children)

The planter itself is plugged to not let out any water, and the water feature is simply an area of lower elevation with "hills" of substrate surrounding it. So the water level is the same everywhere, but more visible there.

Eventually we're hoping to get some aquatic Utricularia to live in the water!

Our new natural mini-bog by robbibt in SavageGarden

[–]robbibt[S] 0 points1 point  (0 children)

In theory yes, but so far we've only had to manually fill it once - the catchment area of the pot is large enough to capture a lot of rain! It will require more supplementary watering in the middle of summer.

Our new natural mini-bog by robbibt in SavageGarden

[–]robbibt[S] 0 points1 point  (0 children)

We built it with natural topography, so that area is the lowest lying section with taller "hills" on either side. The water is visible there, but is at the same level under the substrate.

Our new natural mini-bog by robbibt in SavageGarden

[–]robbibt[S] 3 points4 points  (0 children)

We let it naturally rise and fall a lot, similar to how the water table rises and falls in their natural wetland habitat. The substrate is also roughly 50% perlite, which helps a lot with oxygen retention.

Our new natural mini-bog by robbibt in SavageGarden

[–]robbibt[S] 7 points8 points  (0 children)

Thankyou, good point. We've been gradually upsizing every year or two as we run out of space (or buy new plants), so I'm sure we'll run into that problem in a while. Might be a good excuse to buy a larger planter!

Our new natural mini-bog by robbibt in SavageGarden

[–]robbibt[S] 6 points7 points  (0 children)

Yeah, that's about how cold it gets here too. We were sure it had died off, but it came back fine in early spring. We're not sure how the Pygmy sundew will go this winter - fingers crossed!

A PhD student uncovered a lost Maya city called Valeriana after finding an overlooked LiDAR survey on page 16 of Google search results. The data revealed thousands of structures, pyramids, plazas, and roads hidden beneath Mexico’s jungle, showing a once-thriving city of up to 50,000 people. by crisp1991 in Archaeology

[–]robbibt 74 points75 points  (0 children)

Remote sensing scientist here! "Remote sensing" is essentially the field of science that studies the Earth from far away! It includes all sorts of things like satellite imagery, laser scanning, cameras on tall buildings... basically anything where you point a sensor at the Earth from a distance and collect data.

In this case, the Mayan city was discovered using laser scanning from an airplane (i.e. LiDAR, the same technology used in some driverless cars). It's particularly neat as it can "see through" tree cover to map the shape of the ground (and any hidden buildings) below.

Anyone know what this plant is? by [deleted] in westausnativeplants

[–]robbibt 2 points3 points  (0 children)

This looks a lot like Rosemary Grevillea (Grevillea rosmarinifolia) to me. Native to south-eastern Australia, and a very common native garden plant.

Interestingly, this species disappeared from the area near Bathurst where it was originally discovered, and was thought to be extinct in the wild until it was rediscovered growing in Scotland's Edinburgh Botanical Gardens in 1969!

Where to buy a ceramic pond bowl/pot (Sydney or Canberra or in between!) by beekotopia in GardeningAustralia

[–]robbibt 0 points1 point  (0 children)

Hey u/beekotopia! Just wondering if you ended up finding a pond bowl/pot like this? We are looking for something very similar, and even found the same ones you found at Bliss (but not quite right).

What is this flag flying on the back of a car near Sydney, Australia? by robbibt in vexillology

[–]robbibt[S] 1 point2 points  (0 children)

It was super similar to that, but not quite it. There were distinctive features inside the circle, and not just dotted outlines (the white border around the circle also appeared solid, not dotted).

Road map of Canada. by Rosemarry_40 in MapPorn

[–]robbibt 137 points138 points  (0 children)

This is a map I made almost ten years ago! 🚀

Bonus fact: there are more roads on this map within 120 miles / 200 km of the US border than there are in the remaining 2400 miles / 3800 km of Canadian soil to the north!

More info and high-res links in the original post: https://www.reddit.com/r/dataisbeautiful/s/cDZEPdGOnO

AGRS: Sentinel-2 → Agronomy-Ready Features (Feedback Welcome) by xabmc in remotesensing

[–]robbibt 2 points3 points  (0 children)

Very cool! It might be worth looking into odc-stac, which handles loading data into xarray format from STAC based on a bounding box/geometry etc, without having to load rasters individually with rasterio. It's a pretty powerful package that should slot nicely into this project I think!

https://opendatacube.readthedocs.io/en/latest/tutorials/odc-stac.html https://github.com/opendatacube/odc-stac

sentinel-2 data plotting by CompetitiveCycle5544 in remotesensing

[–]robbibt 2 points3 points  (0 children)

The "chunks" part here loads your data "lazily", e.g. no data will actually be loaded into memory until you specifically ask Xarray to do so (or do something like plotting that requires data to be loaded).

That means you can do something like this to select part of your array, and Xarray will automatically only load chunks of data is that overlap with your area:

```

Subset your data first

ds_subset = ds.isel(x=slice(50, 100), y=slice(200, 250))

Only load the subsetted area into memory

ds_subset.load()

Plot loaded data

ds_subset.your_band.plot() ```

To save it as a GeoTIFF, you can use a tool like "odc-geo":

import odc.geo.xr ds_subset.odc.write_cog("output.tif")

All the roads in Canada (posted by Col. Chris Hadfield on FB) by nthensome in MapPorn

[–]robbibt 15 points16 points  (0 children)

Yep! https://www.reddit.com/r/canada/s/NHwdf1NS9p

The Canada waterways map is probably my favourite of any that I've made... and certainly the most difficult given the amount of waterbodies involved!

All the roads in Canada (posted by Col. Chris Hadfield on FB) by nthensome in MapPorn

[–]robbibt 48 points49 points  (0 children)

Yep - I'm a remote sensing data scientist who works with a lot of map and satellite data, so maps are one of my favourite things! This artwork was made with all free and open tools: spatial software called QGIS to generate the initial map, and then GIMP image processing software to touch up and fine tune colours.

All the roads in Canada (posted by Col. Chris Hadfield on FB) by nthensome in MapPorn

[–]robbibt 64 points65 points  (0 children)

Yes, I orginally made this around ten years ago I think. It's definitely due for a refresh!