Draw polygon on a scatter plot in SeaDAS

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megasaputra8
Posts: 15
Joined: Sun Dec 27, 2020 10:57 pm America/New_York

Draw polygon on a scatter plot in SeaDAS

by megasaputra8 » Tue Dec 29, 2020 7:02 pm America/New_York

I want to create free polygon in a scatter plot in SeaDAS. In the menu, there are many choices like rectangle drawing tool, ellipse drawing tool, and polygon drawing tool. But, when I select rectangle drawing tool or polygon drawing tool, and I draw in a scatter plot, the result is ellipse. You can see in the attachment. So, how to solve this?
I install SeaDAS in MX Linux 19.3.

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gnwiii
Posts: 642
Joined: Fri Jan 29, 2021 5:51 pm America/New_York
Answers: 2

Draw polygon on a scatter plot in SeaDAS

by gnwiii » Tue Dec 29, 2020 9:32 pm America/New_York

From the scatterplot help entry:

Select Mask 'scatter_plot_area'

Allows the user to create a mask from the scatter plot. After selecting the menu entry, an elliptical selection frame can be created by clicking into the plot, dragging, and releasing. The mask will be created according to the values selected, and will immediately be selected.

If you want to annotate the scatterplot you should save an image and use image editing software, or export the data to a more suitable application.

megasaputra8
Posts: 15
Joined: Sun Dec 27, 2020 10:57 pm America/New_York

Draw polygon on a scatter plot in SeaDAS

by megasaputra8 » Tue Dec 29, 2020 10:42 pm America/New_York

Yes, I know that way. But, how to create free polygon from scatter plot?
Because, when I dragging, the result is ellipse. Not polygon.

gnwiii
Posts: 642
Joined: Fri Jan 29, 2021 5:51 pm America/New_York
Answers: 2

Draw polygon on a scatter plot in SeaDAS

by gnwiii » Wed Dec 30, 2020 6:59 am America/New_York

The drawing tools only apply to the product image windows, so you will have to create your desired image with 3rd party tools.   There are only a few SeaDAS developers, so it is best if they focus on the remote sensing capabilities (support for new sensors and algorithms) you can't get from widely used general-purpose software.

megasaputra8
Posts: 15
Joined: Sun Dec 27, 2020 10:57 pm America/New_York

Draw polygon on a scatter plot in SeaDAS

by megasaputra8 » Mon Jan 04, 2021 12:01 am America/New_York

Ok. Thanks

OB SeaDAS - knowles
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Draw polygon on a scatter plot in SeaDAS

by OB SeaDAS - knowles » Thu Jan 07, 2021 9:18 am America/New_York

The scatterplot is created from the image.  You can mask areas of the image by drawing on the image using the polygon, ellipse, ... tools.  You can then apply this mask to refine the scatterplot.  However there are no tools in SeaDAS to enable the user to draw on the scatterplot and have that result transfer to the image.

Danny

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