interactive zooming

[Barry Buternowsky]

Is there a way to interactively zoom; ie. to draw a rectangle around an
area with the mouse and it will zoom. This would make it much easier to
look at features.

[Jeremy Sanders]

Post by Barry Buternowsky
Is there a way to interactively zoom; ie. to draw a rectangle around an
area with the mouse and it will zoom. This would make it much easier to
look at features.

There is a tool to interactively zoom by changing axis ranges with a
rectangle, but no general tool to zoom into a rectangle for the whole plot.

You can also zoom holding down control and using the mouse wheel.

Jeremy

[Barry Buternowsky]

I tried the ctrl-mouse wheel, but that only makes the existing plots
bigger/smaller. I wanted to it change the axes ranges. I did this manually
by changing the axes ranges, but this is too cumbersome.

For example, in Matlab and other utilities, you simply draw a rectangle
around the area that you want to zoom into, and it will rescale the plot.
Then you can right click, and select zoom out and it will go back to the
previous zoom. The actual graph does not change size, just the axes ranges.


On Wed, Sep 18, 2013 at 11:49 PM, Jeremy Sanders

Post by Jeremy Sanders

Post by Barry Buternowsky
Is there a way to interactively zoom; ie. to draw a rectangle around an
area with the mouse and it will zoom. This would make it much easier to
look at features.

There is a tool to interactively zoom by changing axis ranges with a
rectangle, but no general tool to zoom into a rectangle for the whole plot.
You can also zoom holding down control and using the mouse wheel.
Jeremy

[Jeremy Sanders]

Post by Barry Buternowsky
I tried the ctrl-mouse wheel, but that only makes the existing plots
bigger/smaller. I wanted to it change the axes ranges. I did this
manually by changing the axes ranges, but this is too cumbersome.
For example, in Matlab and other utilities, you simply draw a
rectangle around the area that you want to zoom into, and it will
rescale the plot. Then you can right click, and select zoom out and
it will go back to the previous zoom. The actual graph does not
change size, just the axes ranges.

Sorry - it wasn't clear what you mean by zooming. You can zoom into
graph axes using the icon which has a graph with a red dotted box drawn
in it, with arrows pointing to the box (left of the zoom button). You
can then draw boxes on the graph to zoom. Click the pointer icon to
switch back to normal select mode.

Another way to change axis range interactively is to select the axis and
drag the second set of black boxes that appear next to the axis (the
first set of boxes move the ends of the axis).

Jeremy

[Barry Buternowsky]

Nice!

What about zooming out (ie. undo the rectangle zoom)?


On Thu, Sep 19, 2013 at 10:11 AM, Jeremy Sanders

Post by Jeremy Sanders

Post by Barry Buternowsky
I tried the ctrl-mouse wheel, but that only makes the existing plots
bigger/smaller. I wanted to it change the axes ranges. I did this
manually by changing the axes ranges, but this is too cumbersome.
For example, in Matlab and other utilities, you simply draw a
rectangle around the area that you want to zoom into, and it will
rescale the plot. Then you can right click, and select zoom out and
it will go back to the previous zoom. The actual graph does not
change size, just the axes ranges.

Sorry - it wasn't clear what you mean by zooming. You can zoom into
graph axes using the icon which has a graph with a red dotted box drawn
in it, with arrows pointing to the box (left of the zoom button). You
can then draw boxes on the graph to zoom. Click the pointer icon to switch
back to normal select mode.
Another way to change axis range interactively is to select the axis and
drag the second set of black boxes that appear next to the axis (the
first set of boxes move the ends of the axis).
Jeremy

[Jeremy Sanders]

You should be able to do Edit->Undo to undo the zoom.

Jeremy

Post by Barry Buternowsky
Nice!
What about zooming out (ie. undo the rectangle zoom)?
On Thu, Sep 19, 2013 at 10:11 AM, Jeremy Sanders
I tried the ctrl-mouse wheel, but that only makes the existing plots
bigger/smaller. I wanted to it change the axes ranges. I did this
manually by changing the axes ranges, but this is too cumbersome.
For example, in Matlab and other utilities, you simply draw a
rectangle around the area that you want to zoom into, and it will
rescale the plot. Then you can right click, and select zoom out and
it will go back to the previous zoom. The actual graph does not
change size, just the axes ranges.
Sorry - it wasn't clear what you mean by zooming. You can zoom into
graph axes using the icon which has a graph with a red dotted box drawn
in it, with arrows pointing to the box (left of the zoom button). You
can then draw boxes on the graph to zoom. Click the pointer icon to
switch back to normal select mode.
Another way to change axis range interactively is to select the axis and
drag the second set of black boxes that appear next to the axis (the
first set of boxes move the ends of the axis).
Jeremy

[Barry Buternowsky]

Doesn't really work. I did the rectangle zoom a few times, then I modified
some graph properties. When I did "undo" it undid all my plot properties,
but (I assume) ran out of undo levels before it got to the zoom. There
should be a separate undo for rectangle zoom.


On Thu, Sep 19, 2013 at 10:55 AM, Jeremy Sanders

Post by Jeremy Sanders
You should be able to do Edit->Undo to undo the zoom.
Jeremy

Post by Barry Buternowsky
Nice!
What about zooming out (ie. undo the rectangle zoom)?
On Thu, Sep 19, 2013 at 10:11 AM, Jeremy Sanders
I tried the ctrl-mouse wheel, but that only makes the existing plots
bigger/smaller. I wanted to it change the axes ranges. I did this
manually by changing the axes ranges, but this is too cumbersome.
For example, in Matlab and other utilities, you simply draw a
rectangle around the area that you want to zoom into, and it will
rescale the plot. Then you can right click, and select zoom out and
it will go back to the previous zoom. The actual graph does not
change size, just the axes ranges.
Sorry - it wasn't clear what you mean by zooming. You can zoom into
graph axes using the icon which has a graph with a red dotted box drawn
in it, with arrows pointing to the box (left of the zoom button). You
can then draw boxes on the graph to zoom. Click the pointer icon to
switch back to normal select mode.
Another way to change axis range interactively is to select the axis and
drag the second set of black boxes that appear next to the axis (the
first set of boxes move the ends of the axis).
Jeremy