3 formatting

I'd like to be able to place points on a plot using Graphics[{Point[{a,b}],....}]Graphics[{Point[{a,b}],....}] but have the plot symbol be an unfilled circle. I've looked around but can't find any way of doing this. Is there one? Thanks.

After reading the first response, perhaps I should add a bit more. I'd like to be able to do the following:

p1 = Plot[x^2,{x,-3,3}]
p2 = Graphics[Style[Point[{0,0}],PointSize[Large]]
Show[p1,p2]


but with an unfilled circle instead of a dot.

The solution proposed in the first answer falls short in two ways: first, the unfilled circle does not properly hide graphics elements underneath it; second, the circle will appear as an ellipse, not a circle, in the (likely) event that the underlying graphic does not have aspect ratio 1.

The application here is for plotting piecewise discontinuous functions and showing clearly which endpoint at a jump discontinuity holds the value at the point.

I'd like to be able to place points on a plot using Graphics[{Point[{a,b}],....}] but have the plot symbol be an unfilled circle. I've looked around but can't find any way of doing this. Is there one? Thanks.

After reading the first response, perhaps I should add a bit more. I'd like to be able to do the following:

p1 = Plot[x^2,{x,-3,3}]
p2 = Graphics[Style[Point[{0,0}],PointSize[Large]]
Show[p1,p2]


but with an unfilled circle instead of a dot.

The solution proposed in the first answer falls short in two ways: first, the unfilled circle does not properly hide graphics elements underneath it; second, the circle will appear as an ellipse, not a circle, in the (likely) event that the underlying graphic does not have aspect ratio 1.

The application here is for plotting piecewise discontinuous functions and showing clearly which endpoint at a jump discontinuity holds the value at the point.

I'd like to be able to place points on a plot using Graphics[{Point[{a,b}],....}] but have the plot symbol be an unfilled circle. I've looked around but can't find any way of doing this. Is there one? Thanks.

After reading the first response, perhaps I should add a bit more. I'd like to be able to do the following:

p1 = Plot[x^2,{x,-3,3}]
p2 = Graphics[Style[Point[{0,0}],PointSize[Large]]
Show[p1,p2]


but with an unfilled circle instead of a dot.

The solution proposed in the first answer falls short in two ways: first, the unfilled circle does not properly hide graphics elements underneath it; second, the circle will appear as an ellipse, not a circle, in the (likely) event that the underlying graphic does not have aspect ratio 1.

The application here is for plotting piecewise discontinuous functions and showing clearly which endpoint at a jump discontinuity holds the value at the point.

2 added 558 characters in body

I'd like to be able to place points on a plot using Graphics[{Point[{a,b}],....}] but have the plot symbol be an unfilled circle. I've looked around but can't find any way of doing this. Is there one? Thanks.

After reading the first response, perhaps I should add a bit more. I'd like to be able to do the following:

p1 = Plot[x^2,{x,-3,3}]
p2 = Graphics[Style[Point[{0,0}],PointSize[Large]]
Show[p1,p2]


but with an unfilled circle instead of a dot.

The solution proposed in the first answer falls short in two ways: first, the unfilled circle does not properly hide graphics elements underneath it; second, the circle will appear as an ellipse, not a circle, in the (likely) event that the underlying graphic does not have aspect ratio 1.

The application here is for plotting piecewise discontinuous functions and showing clearly which endpoint at a jump discontinuity holds the value at the point.

I'd like to be able to place points on a plot using Graphics[{Point[{a,b}],....}] but have the plot symbol be an unfilled circle. I've looked around but can't find any way of doing this. Is there one? Thanks.

I'd like to be able to place points on a plot using Graphics[{Point[{a,b}],....}] but have the plot symbol be an unfilled circle. I've looked around but can't find any way of doing this. Is there one? Thanks.

After reading the first response, perhaps I should add a bit more. I'd like to be able to do the following:

p1 = Plot[x^2,{x,-3,3}]
p2 = Graphics[Style[Point[{0,0}],PointSize[Large]]
Show[p1,p2]


but with an unfilled circle instead of a dot.

The solution proposed in the first answer falls short in two ways: first, the unfilled circle does not properly hide graphics elements underneath it; second, the circle will appear as an ellipse, not a circle, in the (likely) event that the underlying graphic does not have aspect ratio 1.

The application here is for plotting piecewise discontinuous functions and showing clearly which endpoint at a jump discontinuity holds the value at the point.

1

Graphics plot of point using unfilled circle

I'd like to be able to place points on a plot using Graphics[{Point[{a,b}],....}] but have the plot symbol be an unfilled circle. I've looked around but can't find any way of doing this. Is there one? Thanks.