Which slices cannot be divided

When you delete a user slice or layer-based slice, auto slices are regenerated to fill the document area. Deleting a layer-based slice does not delete the associated layer; however, deleting the layer associated with a layer-based slice does delete the layer-based slice. You cannot delete auto slices. If you delete all user slices and layer-based slices in an image, one auto slice covering the entire image remains.

Legal Notices Online Privacy Policy. Buy now. Modify slice layout Search. Make it. Select one or more slices. Do one of the following:. Select the Slice Select tool and click the slice in the image. When working with overlapping slices, click the visible section of an underlying slice to select it.

Select the Slice Select tool, and Shift-click to add slices to the selection. Clicking in a user slice and dragging moves the slice. In the dialog box, use the Slice tool to select a slice. Move, resize, and snap user slices. Move or resize a user slice. Select one or more user slices. Resize or move a user slice using numeric coordinates. Click the Options button in the options bar.

You can also double-click a slice to show the options. In the Dimensions area of the Slice Options dialog box, change one or more of the following options:. The default origin of the ruler is the upper-left corner of the image.

Specifies the width of the slice. When I want to slice the first three elements, I must give the until parameter as 3. This can create some confusion. Finally, I assign the sliced Array to the newArray variable. The name of this function is very similar to slice.

This naming similarity often confuses developers. The splice method changes an array, by adding or removing elements from it. For removing elements, we need to give the index parameter, and the number of elements to be removed:.

Index is the starting point for removing elements. As a second example, I give the second parameter as 1, so elements starting from index 2 will be removed one by one each time we call the splice method:. For adding elements, we need to give them as the 3rd, 4th, 5th parameter depends on how many to add to the splice method:. Slice and splice methods are for arrays. This gives the right number of pieces but with too many cuts.

If a problem is hard, try doing a simpler one first. Is there some number of cuts that will divide our circle into seven pieces? Perhaps we can do it with more than three, and then see ways to simplify or remove some of the cuts. Alternatively, we could make three cuts through the center, dividing the circle into six pieces, each whose angle equals sixty degrees.

This is the right number of cuts, but we don't have enough pieces. We would need one more cut. Fact : At least one of the cuts does not pass through the center of the circle. This is a major step forward. There are so many different ways to cut the circle, we need to find a way to test all the possibilities.

This gives us a wonderful start. Proof: If not, we can only create additional regions by extending a line that is either entirely within the circle, or going from the perimeter to some interior point. The purpose of this observation is to help us navigate all the possible configurations.

Other attempts might include having two vertical lines and one horizontal line, or one vertical and two horizontal. These both give only six pieces. Three parallel lines is worse, as only four pieces are created. Do we need to make even weirder pieces to accomplish our task? All of our examples so far have had all of the pieces include some of the border of the circle.

Is it possible to find an example where this does not happen? Let's put these observations aside and instead try to search for a solution more methodically. A good way to think about the problem is to add lines on the circle one by one and see how many pieces we can get from the circle after each step.

Cannot slice array - I need to split an array in half Ask Question. Asked 9 years, 10 months ago. Active 9 years, 10 months ago. Viewed times. Add a comment. Active Oldest Votes. Thomas Kelley Thomas Kelley 9, 1 1 gold badge 34 34 silver badges 41 41 bronze badges. This appears to be a partial solution, the ' Sorry, should have specified that. Didn't know what the expected behavior should be with an odd number of elements, so I didn't attempt it.

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