Also you can read this article or download Skelion user's manual from web site.

They don't have my permission and never ask to me.
To see the link to plugins just click on wtyczki.

I hope if you have a plugin non free, it doesn't be in this page. They are selling plugins without permission.

http://
sketchup
.
com
.
pl

I would like to use a method like

3.1415.watts_to_kwatts

SketchUp warehouse does not let me to add the method to Float class:

class Float
def watts_to_kwatts()
...
end
end

Is there a solution to make sentence work storing method in a subclass?

You need to know if a panel is in shadow or not using this 2 vectors and using cosine law
panel verctor->
v=Sketchup.active_model.selection[0].normal
sun vector->
s=Sketchup.active_model.shadow_info["SunDirection"]

But you need to know also if there is some object projecting shadow over the panel using raytest with sun vector and some points of the panel. You can modify this step and look for other methods if you need more accuracy...

Sorry, there was an error in version a 5.0.9.
It was fixed. Download 5.1.0 and install it.

You can use Model.raytest to know it.
If you are working with solar panels you can use Skelion plugin also.
Best

Command key (⌘) + P does not work in MAC OS webdialog for unknown reason. I will add a button with window.print() to the webdialog.

Don't use stack components when coplanar. Stack components is used to insert rows with more than one panel when they have some tilt over the roof or ground.

Is possible to print a webdialog in MAC OS?
In windows just clicking right button you can print all dialog as pdf but on MAC OS only shows "reload".

@kaiyer said:

PVWatts is changing. There is a new version http://pvwattsbeta.nrel.gov/
that will replace the v1 and v2 versions soon. How do I update to point to the new PVWatts. Is this something I can do myself? Can you update and release a new version?

No, you can not update yourself. You need to wait to for a new Skelion release.
You are talking of a beta PVWATTS. When it will be stable Skelion will change if it is necessary.

I just added a feature in Skelion plugin to add large terrain mesh. It uses NASA’s SRTM Elevation data. The bad news are that it is a pro feature and there is no good interpolation, so in some areas like Tibet you can appreciate the errors.
No image terrain imported.

In the image you can see maximum area of SketchUp and the mesh exported with Skelion.

PVSYST exporter is not yest in manual but you can export pressing pvsyst icon: .
Buildings does not project shadows over solar panels. They are working to fix that. But size and position of solar panels are right.

I'm not sure what are you looking for but here you have the
angle between north an a vector normal to face (with z=0) (Not valid for face in xy plane)

northvec=Geom;;Vector3d.new( Math;;sin(Sketchup.active_model.shadow_info['NorthAngle'].degrees), Math;;cos(Sketchup.active_model.shadow_info['NorthAngle'].degrees),0)

vec=face.normal
vec.z=0

result= northvec.angle_between(vec).radians

Something similar occurs if you close dialog in a callback:

my_dialog.add_action_callback("test") do |web_dialog,param| 
	web_dialog.close
	UI.messagebox('NOT DISPLAYED')
end

You can read this topic about Ruby code to extract watermark

Recently I found a progress bar of Thomthom in this topic A way to avoid that? and I liked so I did one similar, but only to inform (not to abort operation).
Here is the code is someone is interested.

Progress bar with tasks

Thanks thomthom

For mac users:
Safari 5.1.7 turns black the text boxes of plugin dialogs.
Read this thread to solve the problem:
http://forums.sketchucation.com/viewtopic.php?f=11&t=45382&hilit=black+webdialog&start=15

When I updated to Safari to 5.1.7 in Mac Leopard webdialogs boxes turn black in Sketchup.
I've installed an older version of safari with pacifist and now it works again.

http://www.charlessoft.com/ (pacifist software)
http://mac.oldapps.com/safari.php (Safari 5.1.1 (Snow Leopard))

A new version (skelion_v504) has been released.
Now you can pile up components in same row and distribute rows in same grid with "rows alignment". A user's guide has been added too.

Sun path chart plots has been added as free features to the plugin: