area code is 877

Recently, I helped someone solve a problem. How can I determine whether a coordinate point is in a polygon area (two-dimensional ). I searched for a circle on the Internet and wrote my own code. There are multiple algorithms, such as convex polygon and concave polygon. In short, this is troublesome. Continue searching

In GUI functions of the MATLAB Image Processing Toolkit (image processing Toolbox), there are some functions used to select rectangles or elliptical regions on an image or an axis, using the following example: [plain] view plain copy print? Figure, Imshow (' cameraman.tif '); h = imrect (GCA, [10 10 100 100]); API = Iptgetapi (h); Api.addnewpositioncallback (@ (P) title (MAT2STR (p,3)); FCN = MAKECONSTRAINTORECTFCN (' Imrect ', Get (GCA, ' Xlim '), Get (GCA, ' Ylim ')); API.SETPOSITIONCONSTRAINT

Obtain the height and width of the visible area of the browser window. For details about the height of the scroll bar, see.IE, the browser display window size can only be obtained below: the code is as follows: copy the codeCopy codeThe Code is as follows:Document. body. off

Block Storage Area-how to verify whether a block is on the stack or on the stackThe block storage area requires three terms: ● _ NSConcretStackBlock ● _ NSConcretGlobalBlock● _ NSConcretMallocBlockThe three block storage methods are described as follows: Stack, global, and heap. [Point 1] The block defined outside the function

This article describes how to get the height of a webpage by js, such as the visible area, body, and screen resolution. For details, refer to the visible area width of the webpage: document. body. clientWidth. Visible area height: document. body. clientHeight Visible area width of the webpage: document. body. offsetWid

median of 1 land is an island, so the number of islands = 1Example 2 input3 3#...# ....Output0DescriptionThe middle connecting block has an area at the boundary, so not the island, number of islands = 0."Analysis": the BFS solves the connected block, noting that in the solution process, if the connected block region is at the boundary, it

A mouseover,mouseout is used to trigger an event to determine whether the mouse is in the area. But the limitation of this approach is that you have to trigger mouseover, or Mouseout,mouseleave events to know Today studied this question, also popularized the knowledge. Method One: A mouseover,mouseout

You can use mouseover or mouseout to trigger an event to determine whether the mouse is in this area. However, the limitation of this method is that it is necessary to trigger mouseover or mouseout, And the mouseleave event can only be known if this problem has been studied today. Method 1: You can use mouseover or mo

of the largest triangle and returns two decimal places.Each group of output occupies one row. Sample Input33 42 63 762 63 92 08 06 67 7 Sample Output1.5027.00 AuthorEddy Recommendlcy Question Analysis: The simple application of convex hull, finding 3 points in n points, they form the largest Triangle Area. This question generally has two ideas: 1) direct violence. This will certainly be TLE, beca

Js Code for automatically scaling down images in a specified area Sometimes the content we update contains many large images, which may cause page deformation or fail to see the full picture. In general, we use the max-width Control of css, but some browsers do not support it. We can also use js to supplement it. The Code is