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Shade Map

shademap.app

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Re: Shade Map

#11

Post by tppiotrowski »

illithid0 wrote: post #6

This is great. I would love a way to simulate something like possible tree placement and how much shade that may generate over the years. There are some parts of my area that are, despite being cut out of a forest, devoid of trees but are supposed to be "outdoor shared spaces". Full sun all day at a dog park in August, for example, just isn't a place I want to be.

Site maintainer here. There is a polygon drawing tool in the upper right corner of the map. You can use it to draw polygons on the map and assign them a height. The shadows will update instantly. You can use it to add buildings that are missing from the map, simulate a tree placement or even simulate cutting down a tree if you set the height to 0.

Re: Shade Map

#12

Post by foco_tubi »

tppiotrowski wrote: post #10
foco_tubi wrote: post #8

This doesn't look particularly accurate, at least not relative to what I can see right now out my window.

Website creator/maintainer here. Happy to try and diagnose the error if you elaborate on what the discrepancy is (tree, building, hill, etc)...

Hi there! My office window faces east and this morning, your map showed shade from the building across the street (correct), as well as shade from my building on the lawn below my window (incorrect).

Re: Shade Map

#13

Post by Gallows4574 »

tppiotrowski wrote: post #10
foco_tubi wrote: post #8

This doesn't look particularly accurate, at least not relative to what I can see right now out my window.

Website creator/maintainer here. Happy to try and diagnose the error if you elaborate on what the discrepancy is (tree, building, hill, etc)...

Very cool tool! It's generally accurate, but, there are spots showing shadows where there are no trees or anything at all to cast a shadow, and missing several spots where there are actually trees.

It's missing a 40' tall ash, a 40' tall maple, and all four 30' tall blue spruce. So they're not exactly small trees. Our septic field is showing as in shadow all day even though there are no trees near it. That shadow doesn't move at all like the rest so I'm not sure what it's detecting.

Re: Shade Map

#14

Post by tppiotrowski »

foco_tubi wrote: post #12
tppiotrowski wrote: post #10

Earlier quoted context omitted.

Website creator/maintainer here. Happy to try and diagnose the error if you elaborate on what the discrepancy is (tree, building, hill, etc)...

Hi there! My office window faces east and this morning, your map showed shade from the building across the street (correct), as well as shade from my building on the lawn below my window (incorrect).

Thanks for the reply. Do you have a tree or bush outside your window? I estimate where tree shadows fall but it's not super accurate. In the settings dialog you can toggle, "below canopy", "above canopy" or disable tree shadows altogether.

Re: Shade Map

#15

Post by tppiotrowski »

Gallows4574 wrote: post #13
tppiotrowski wrote: post #10

Earlier quoted context omitted.

Website creator/maintainer here. Happy to try and diagnose the error if you elaborate on what the discrepancy is (tree, building, hill, etc)...

Very cool tool! It's generally accurate, but, there are spots showing shadows where there are no trees or anything at all to cast a shadow, and missing several spots where there are actually trees. It's missing a 40' tall ash, a 40' tall maple, and all four 30' tall blue spruce. So they're not exactly small trees. Our septic field is showing as in shadow all day even though there are no trees near it. That shadow doe…

Sorry about that. The current tree estimate is done via computer vision but I am working on migrating to LiDAR backed data which should eliminate false positives.

Just waiting for the TBs and TBs of data to download and then this Macbook M4 is going to make some heat...

Re: Shade Map

#18

Post by illithid0 »

tppiotrowski wrote: post #11
illithid0 wrote: post #6

This is great. I would love a way to simulate something like possible tree placement and how much shade that may generate over the years. There are some parts of my area that are, despite being cut out of a forest, devoid of trees but are supposed to be "outdoor shared spaces". Full sun all day at a dog park in August, for example, just isn't a place I want to be.

Site maintainer here. There is a polygon drawing tool in the upper right corner of the map. You can use it to draw polygons on the map and assign them a height. The shadows will update instantly. You can use it to add buildings that are missing from the map, simulate a tree placement or even simulate cutting down a tree if you set the height to 0.

Wow! Can't believe I missed this. Thank you.

Re: Shade Map

#20

Post by jborichevskiy »

I've wanted something like this - in Boulder the foothills cast a shadow on the town considerably earlier than sunset provided by weather apps. So in theory, this should be possible to figure out when a park will actually see a sunset. Nice work!
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