81. Move the Selection Marquee
Before You Begin
70 About Making Selections
78 Expand or Shrink a Selection
79 Add Areas Similar to the Current Selection
80 Smooth a Jagged Selection Edge
83 Select Everything But the Current Selection
If you decide you don't like the positioning of the selection marquee, you can easily move it within the image. For example, if you've drawn a rectangular selection around some data, for the purpose of copying that data to another image or to start building a frame around that part of a photograph, after creating the selection you might decide that the result would be oh-so-much-better if you could just nudge the marquee a bit to the left. Or maybe you're painting a selection using the Selection Brush, creating a freehand heart shape or butterfly selection; although the shape of the selection looks pretty good, it no longer fits perfectly over the data you want to select. In such a case, moving the selection marquee is the solution.
When you move a selection, you are simply repositioning the borders of the selection marquee; you are not moving the data within the selection. If you want to do that, see 86 About Copying, Cutting, and Pasting Data Within a Selection. To move a selection marquee, you can drag it with any selection tool (except the Selection Brush tool). You can even move the selection to another image if you like.
Open the image you want to mask in the Editor in Standard Edit mode and save it in Photoshop (*.psd) format. In the Layers palette, choose the layer that contains the data you want to select and make an initial selection in the open image. You can use any of the selection tools (or any combination of tools) to create the initial selection.
You might also move the marquee to select the same-sized area multiple times in one or more photos to create Web buttons, similarly sized photos for a locket or refrigerator magnet, or some similar purpose.
Choose a Selection Tool
On the Toolbox, choose any selection tool except the Selection Brush. On the Options bar, make sure that the New Selection button is enabled.
Position Mouse Pointer
Move the mouse pointer so that it is positioned inside the selection marquee. Notice that the mouse pointer changes to a white arrow with a white rectangle under it when it is positioned inside the selection marquee.
Drag Selection Marquee
Click and drag the selection marquee to the desired location within the image or into another image window. As you drag the selection marquee, the mouse pointer changes to a solid black arrow.
To move the marquee in small increments of a single pixel, use the arrow keys instead of the mouse. To move the marquee by ten-pixel increments, press Shift and the appropriate arrow key.
View the Result
When the selection marquee is positioned in its new location, release the mouse button to drop it. After you're satisfied with the selection, make changes to the area within the selection, copy or cut its data to another image or layer, or delete the data within the selection. Save the PSD file and then resave the result in JPEG or TIFF format, leaving your PSD image with its layers (if any) intact so that you can return at a later time and make different adjustments if you want.
In this example, I created a rectangular selection around an area of green ivy leaves that I intended to use as the background for a birthday card I was creating in another image; then I decided to select a different area of ivy. After I placed the selection marquee in the desired position, I copied the selection so that I could paste it into the new image (see 86 About Copying, Cutting, and Pasting Data Within a Selection).