I've tried researching my problem for a day, but I'm still stumped. I have a circle with subcircles, say 5. I have divided the circle into 17 pie slices, by running bezier lines through the centre. It means my circle is now divided into 17*5= 85 sectors. I want to know how to convert these 85 sectors into fillable objects so that I can assign them various colours to make my diagram meaningful. This much I've achieved: I managed to make one sector into a fillable object using "Intersection". But I can't seem to reproduce it. I'm hoping that there is one simple operation that allows me to do this for all 85 sectors.
You must probably need to push the large circle into the background to get "free" access to the foreground elements. I'd give it another color to visually find the shapes easier.
Inklinea, you have provided a very instructive video on The True Vector Fill method, wherein a group of intersecting circles are divided up into separate, movable and fillable shapes. I was able to reproduce the content of the video. That's really nice to know. Polygon, your polar grid is fantastic. I would never have know this feature was there. I thank you for your skills and knowledge.
Now, there are two methods for obtaining fillable shapes here.
1 - The True Vector Fill method, using division. It doesn't work on the polar grid
2 - Polygon's method, using Break Apart. It also doesn't work on the polar grid.
Polygon, you advised pushing the large circle into the background. I'm presuming you mean select the large circle, then apply Object/Lower to Bottom, right? After doing this, neither method works. I also used Tyler's random colours, which is a cool feature, but I still end up with a black filled circle.
I want to share that the Fill Bounded Areas tool does work, and I was able to complete my diagram, though the diagram looks unsightly because of the unfortunate gap around the perimeter of each shape, as pointed out by Inklinea. I was really hoping to get True Vector Fill working, especially as you guys have been so helpful to get me this far. I also think Inkscape should fix the problem with "Fill Bounded Areas". Inkscape is a Vector Graphic Program of immense power and scope. I'm quite astonished that it can't readily do something as simple as putting a colour in a box adequately. I'm not the type to give up easily, but I wouldn't blame anyone who went through several days of vector graphic hell if they went back to coloured pencils and paper.
I'm hoping that you might both be so kind as to actually reproduce the problem to attain a successful outcome.
To do so, you would need to
Make a polar grid, with, say, 8 circular divisions and 17 angular divisions
Apply a method such that you attain individual movable, fillable shapes within the grid
Fill at least 3 shapes with different colours, say red, yellow and blue
Tyler, that looks like it's the perfect solution, but regrettably my Inkscape for the Mac, Inkscape 1.1.1 (c3084ef, 2021-09-22), does not have the Boolean Operations sub menu, nor the Path Ops dialog. Is that because Inkscape for the Mac doesn't have all the features? Or can I download this extension from somewhere?
Tyler, I was able to download the extension you recommended, and I looked up how to install it, and did so successfully. I would never have known where to find the extension without your help. Your method worked like a charm. Polygon, I'm sure your method worked for you, but the nature of forum solutions is that what works for you, might not work for me due to subtle differences in out setups, as in Mac vs Windows, or different versions with different behaviours. Also, perhaps I erred in some subtle aspect of the process. Your help is nonetheless greatly appreciated. Inklinea, you introduced me to the Fill Bounded Areas Tool and the concept of True Vector Fill. Very valuable. All of you are highly technically skilled on Inkscape. I'm not, but I have a skill, too. I keep asking questions until I get to resolution. In this way, we worked together well, and I'm deeply grateful to all three of you for getting me out of Vector Graphic Hell. The diagram shows the two completed circles - on the left is with the False Vector Fill. It's ugly, but it would do if I had nothing else. The one on the right is with True Vector Fill using Tyler's PathOps Division. It looks elegant, and exactly what I envisioned at the conceptual stage. Thanks again to the contributors, and also to the moderator and the forum as a whole. You're all beyond brilliant!
I found Polygon's method to work, and as noted, the topmost object is a full circle that needs to be sent to the back. That method also leaves gaps between the segments, which may or may not be desirable.
The goal can also be achieved by making arc-segments of 21.176 degrees (360/17), but that is rather tedious for this case of multiple concentric segments.
Beginners' Questions Breaking a Pie Chart into Fillable Sectors
Inkscape.org
I've tried researching my problem for a day, but I'm still stumped. I have a circle with subcircles, say 5. I have divided the circle into 17 pie slices, by running bezier lines through the centre. It means my circle is now divided into 17*5= 85 sectors. I want to know how to convert these 85 sectors into fillable objects so that I can assign them various colours to make my diagram meaningful. This much I've achieved: I managed to make one sector into a fillable object using "Intersection". But I can't seem to reproduce it. I'm hoping that there is one simple operation that allows me to do this for all 85 sectors.
Using Inkscape 1.1 for the Mac
https://inkscape.org/forums/tutorials/true-vector-fill/
This method may work
Another method is to start with a Extensions->Render->Polar Grid.
Then: Ungroup - Path->Stroke to Path - Path->Union - Path->Break Apart - this will generate individual shapes you can color fill to your liking:
Nice polar grid. That's an amazing feature!
I got my grid, with 17 angular divisions and 5 circular divisions.
Then I applied your 4 transformations - Ungroup, Stroke to Path, Union and finally Break Apart.
After Break Apart I was left with a black filled circle. When I view in Outline View, the polar grid is still there.
Is there a step that I'm missing?
You must probably need to push the large circle into the background to get "free" access to the foreground elements. I'd give it another color to visually find the shapes easier.
I'd try Select All, Extensions>Color>Random to see all the pieces, then adjust each as needed.
Inklinea, you have provided a very instructive video on The True Vector Fill method, wherein a group of intersecting circles are divided up into separate, movable and fillable shapes. I was able to reproduce the content of the video. That's really nice to know. Polygon, your polar grid is fantastic. I would never have know this feature was there. I thank you for your skills and knowledge.
Now, there are two methods for obtaining fillable shapes here.
1 - The True Vector Fill method, using division. It doesn't work on the polar grid
2 - Polygon's method, using Break Apart. It also doesn't work on the polar grid.
Polygon, you advised pushing the large circle into the background. I'm presuming you mean select the large circle, then apply Object/Lower to Bottom, right? After doing this, neither method works. I also used Tyler's random colours, which is a cool feature, but I still end up with a black filled circle.
I want to share that the Fill Bounded Areas tool does work, and I was able to complete my diagram, though the diagram looks unsightly because of the unfortunate gap around the perimeter of each shape, as pointed out by Inklinea. I was really hoping to get True Vector Fill working, especially as you guys have been so helpful to get me this far. I also think Inkscape should fix the problem with "Fill Bounded Areas". Inkscape is a Vector Graphic Program of immense power and scope. I'm quite astonished that it can't readily do something as simple as putting a colour in a box adequately. I'm not the type to give up easily, but I wouldn't blame anyone who went through several days of vector graphic hell if they went back to coloured pencils and paper.
I'm hoping that you might both be so kind as to actually reproduce the problem to attain a successful outcome.
To do so, you would need to
Here's another way, in two parts:
Part 1:
PathOps may take a minute or more, Part two picks up before the operation finishes.
Part 2:
Tyler, that looks like it's the perfect solution, but regrettably my Inkscape for the Mac, Inkscape 1.1.1 (c3084ef, 2021-09-22), does not have the Boolean Operations sub menu, nor the Path Ops dialog. Is that because Inkscape for the Mac doesn't have all the features? Or can I download this extension from somewhere?
https://inkscape.org/~Moini/%E2%98%85multiple-boolean-operations-with-inx-pathops
It worked as I have shown and described.
Tyler, I was able to download the extension you recommended, and I looked up how to install it, and did so successfully. I would never have known where to find the extension without your help. Your method worked like a charm. Polygon, I'm sure your method worked for you, but the nature of forum solutions is that what works for you, might not work for me due to subtle differences in out setups, as in Mac vs Windows, or different versions with different behaviours. Also, perhaps I erred in some subtle aspect of the process. Your help is nonetheless greatly appreciated. Inklinea, you introduced me to the Fill Bounded Areas Tool and the concept of True Vector Fill. Very valuable. All of you are highly technically skilled on Inkscape. I'm not, but I have a skill, too. I keep asking questions until I get to resolution. In this way, we worked together well, and I'm deeply grateful to all three of you for getting me out of Vector Graphic Hell. The diagram shows the two completed circles - on the left is with the False Vector Fill. It's ugly, but it would do if I had nothing else. The one on the right is with True Vector Fill using Tyler's PathOps Division. It looks elegant, and exactly what I envisioned at the conceptual stage. Thanks again to the contributors, and also to the moderator and the forum as a whole. You're all beyond brilliant!
I found Polygon's method to work, and as noted, the topmost object is a full circle that needs to be sent to the back. That method also leaves gaps between the segments, which may or may not be desirable.
The goal can also be achieved by making arc-segments of 21.176 degrees (360/17), but that is rather tedious for this case of multiple concentric segments.
I see the "gaps" as the contour color in the example files in reply n#14 maintained by the large circle in the background.
Ja, but if one wanted contiguous cells without borders, PathOps method is the way.
If you don´t mind the (AA) gaps all will be fine.