The effect of this tutorial is somewhat similar to the vector painting effect. The production method is also relatively unique, the early stage is basically to use filters and layer mixing and so on to make similar vector color block diagram. Later refinement processing, and finally in accordance with their favorite to polish it.
Original
Final effect
1, open the original material,
Scenario: You need to automate the operation, crop the grid's range to a vector, and then crop the vector grid. Using the arcpy implementation, the code is as follows:
Import arcpy arcpy.env.workspace = ' F:/dl_data/mass_buildings/test/sat ' rasters = arcpy. Listrasters ("*", "tiff") Output_workspace = "f:/dl_data/mass_buildings/test/map_corr/ras/" for ras in rasters:img = a rcpy. Raster (RAS) ext = img.ex
Requirements
Required knowledge
This article requires a basic understanding of html and css front-end code.
Running EnvironmentStandard browser, compatible with IE7
Source code download
Font Awesome provides you with a set of scalable Font vector icons that can quickly customize the size, color, and shadow of the icons. These can be achieved through CSS, no JS code is required.
3. Use CSS to customize the Icon size, color, and shadow.
5. Supp
The data structure we implement is to solve the dynamic open-up space usage during the running process (for example, we do not know how much we enter without stopping the input)
Two principles:
I. Stupid Methods
How much space is used and how much space is opened for the first time?
The second time we use space, we will open up space B larger than the first one, copy the data in A to B, then release a, and write new data in C.
Disadvantage: copying is too many times and the efficiency is lo
Establishing equationsSet a to a point outside the line,B,c to two points in a straight line$\left\{\begin{matrix}(X-ax,y-ay) \cdot (cx-bx,cy-by) =0 \\FRAC{Y-CY}{X-CX}=\FRAC{Y-BY}{X-BX} \\end{matrix} \right.$?Solve the symbolic solutionUsing the Mathematics tool:
solve[{(x?-? Ax) * (CX?-? bx)? +? ( Y?-? ay) * (Cy?-? by)? = =???
??? 0,? (y?-? Cy) * (x?-? bx)? = =? (y?-? by) * (x?-? cx)},? {x,?y}]??
Come to the following:
{{x?->?-(bx?-? cx)? ( Ax?bx?+?ay?by?-? ax?cx?-? a
For example, I have a piece of code as follows:
Class cls_vector_item
There is no problem with this code.
When VCT. push_back (CVI);, when the internal space of VCT is insufficient, a new space will be applied and the object will be removed!
However, note that this object should have been removed, but the internal object of the object we are currently in will be removed, but it will become garbage, that is, when the VCT applies for space, the old space is destructed, but our objects are st
This problem really was met in the interview, unfortunately at that time the complexity to O (N2), too frustrated, no wonder that did not pass the interview.GivenNnon-negative integersa1 ,a2 , ...,an , where each represents a point at coordinate (I,ai ).NVertical lines is drawn such that the both endpoints of lineIis at (I,ai ) and (I, 0). Find lines, which together with X-axis forms a container, such that the container contains the most water.Note:you may not slant the container.The topic is a
I recently completed a small Android project called jigsaw puzzle. The project is not complex, but it is also a complete project, which involves a wealth of knowledge points.
The following is a summary as follows:
Requirement definition:
1. Select an image and go to the tile page. You can select a default image or custom image, that is, select an image from the image library or take a photo from the camera.
2. You can set the difficulty of the gam
http://www.289.com/anews/65023/Fighting anti-pearl Capcom published "Quick hit whirlwind puzzle spirits"2014-10-15 Source: The site finishing editor: OtakuCapcom recently announced in Tokyo, "The ultimate fast-hit Cyclone 4 2014 Bounty System national competition, a swing Cup" on the launch of this winter's smart mobile app "Fast hit Whirlwind puzzle Spirits (ストリートファイターパズルスピリッツ)" (IOS/ Android).This is the
C + + STL provides a very powerful sorting function sort, which can sort any array, struct, and class, let's take a look at the simplest array sort. The default ascending order, we can also add less or greater to tell the compiler what sort order we want.vectorint> v = {2015927}; // Ascending order sort (V.begin (), V.end ()), Sort (V.begin (), V.end (),less int>()); // descending order sort (V.rbegin (), V.rend ()), Sort (V.begin (), v.end (), Greaterint> ());If it's a two-dimensional array, or
# Include
I recently wrote a jigsaw puzzle game with a square 4*4, as long1 2 3 45 6 7 89 10 11 1213 14 15 0The number corresponds to the one above, and the puzzle is successful (0 is displayed with spaces, and only it can be moved, for example, it can only be changed between 12 and 15 and 0.To move numbers)I have completed the number movement function, but there is no good way to initialize the
ZOJ 3814 Sawtooth Puzzle status compression search
Since there are only four statuses in a box, the total number of statuses is only 4 ^ 9, and bfs can be solved.
The trouble lies in simulation.
The method of saving my status is to regard the initial status as 000000000. If it is rotated once clockwise, + 1, 3 + 1 = 0.
During the bfs process, you need to set a dfs calculation to which boxes will be affected by rotating the current box.
Note that there
To the U.S. Mito software users to detailed analysis of the puzzle to share the production of the tutorial.
Tutorial Sharing:
Let's look at the heart-shaped effect of "beauty Mito":
From near, and then close, the photograph is like the distance between two people who love each other, love each other, but is separated from the distance, but only the heart of love two lessons are very close. Let's take a look at how t
See Android Today, see an open Source Library Android-flipview, and then look at it and go around the jigsaw puzzle, and now I'm going to write a simple jigsaw puzzle game. This will be my second series of articles, today is the first day, the simple Java command line to simulate the realization of the puzzle game. Code:
Package Com.wly.algorithmproblem;
Import
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