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
! (LHS, RHS ).
Vector iteratorIn addition to common prefix auto-increment operators, the vector iterator also supports arithmetic operations: It + N, IT-N, and it2-it1. Note that the return value of it2-it1 is difference_type (signed type ).
Note that any operation that changes the container size may invalidate the previous iterator.
Application Example
# Include # Include # Include Using namespace STD;Int
component mainly accesses the vector register group. In this way, the computation component can perform high-speed computation and reduce the memory size.To reduce the data transmission rate of primary storage by about 70% compared with vertical processing. Both CRAY-1 and 757 in China belong to this type.
Software and ApplicationVector Machines are generally equipped with vector assembly and
copies.Create a vector with an interval of [beg;end].Destroys all data and frees up memory.
Vector Operation
Function
Describe
Operator[]
Returns a reference to the specified position in the container.
Example: 1. Initialization example#include "stdafx.h" #include Vectorsample.cpp: Defines the entry point of the console application. #include "std
capacity of this vector so that it is equal to the current size of the vector.
InstanceThe following program illustrates several of the methods supported by this collection:ImportJava.util.*; Public classVectordemo { Public Static voidMain (String args[]) {//Initial size is 3, increment is 2Vector v =NewVector (3, 2); System.out.println ("Initial Size:"
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
Vector usage in JAVAJava. util. Vector provides a Vector class to implement functions similar to dynamic arrays. There is no pointer concept in the Java language, but correct and flexible use of pointers can indeed greatly improve the quality of the program, for example, the so-called "dynamic array" in C and C ++ is g
# Include
Running result:
In codeblocks, set the parameters of the main function as follows:
Open the codeblocks interface, project-> set programs 'arguments...
In the select target dialog box that appears, select debug
In program arguments: Enter the parameter required by the main function and click OK.
The result is as follows:
Or run the program using cmd:
Go to bin \ debug \
Run the foll
.
AThe unit vector of isA/|A|, That is, (x, y)/SQRT (x ^ 2 + y ^ 2 ).
Iv. simple 2-D tracking
Now, with the basic vector knowledge, we can analyze a common problem-tracking from one point on the screen to another. In fact, this problem can also be understood as a line-drawing problem, there are many online draw algorithms: DDA, midpoint, and bresenham. However, these algorithms are generally used to draw f
application. // # Include "stdafx. H "# include
The program running result is as follows:
The above Code uses four methods to create a vector and initialize it.2. Example of adding and obtaining elements:
// Vectorsample. cpp: defines the entry point of the console application. // # Include "stdafx. H "# include
The code above defines an integer element Vector
automatically add 1,However, due to the sequential forward of subsequent elements, it is equivalent to automatically pointing to the next position of the iterator.8. V1 = V2: Determine whether V1 and V2 are equal.9 .! =, 10. Vector For const vector, 11. P = v1.end (); P points to the next position of the last element of V1.12. V. Clear () delete all elements in the container. 12. V. Clear () delete all ele
Bloggers began to leave the ACM Army a few years ago, so far it has taken a few days to improve the environment. The recent regression Program Ape Army, found that code force plummeted, has not been a night before the OJ of the program ape Preparation army. Has now become a code slag slag. This is a new beginning to write a blog, the new strength of code. will continue to learn the process of updating out,
. Zero 8. One one one three three oop three three three three four In addition, Vector plays an important role in parameter transfer. There is a canvas (canvas) and a (panel) in the applet, and the Panel has the information that the user wants to input, which passes the parameters to the canvas, using an interface (Interface) in Java, and a vector in the interface To pass these parameters. In ad
automatically add 1,However, due to the sequential forward of subsequent elements, it is equivalent to automatically pointing to the next position of the iterator.8. v1 = v2: Determine whether v1 and v2 are equal.9 .! =, 10. vector For const vector, 11. p = v1.end (); p points to the next position of the last element of v1.12. v. clear () delete all elements in the container. 12. v. clear () delete all ele
Document directory
Preface
1. How to implement vector
Ii. Vector class definition
3. Insert implementation in Vector
Preface
The project team should implement an algorithm library that involves the implementation of one-dimensional arrays similar to vector. Here, we will learn and understand
ArrayList ();2. You can add any object in the list, including the new class that you defined.3. Use Mylist.add (any object); You can add it.4, the value of the time Mylist.get (index), the value is an object, the use of the type conversion required.5. The iterator iterator can be used to iterate over the elements in the list. The objects in the list collection are emitted in a certain order, and the contents can be duplicated.List interface Implementation class: ArrayList (Implement dynamic Arr
");Sentence. push_back ("are ");Sentence. push_back ("you ");Sentence. push_back ("? ");
Copy (sentence. begin (), sentence. end (),Ostream_iterator Cout
Cout Cout Cout
Swap (sentence [1], sentence [3]);
Sentence. insert (find (sentence. begin (), sentence. end (),"? "),"Always ");
Sentence. back () = "! ";
Copy (sentence. begin (), sentence. end (),Ostream_iterator
Cout
Cout Cout Cout } Running result:
In the program, when an element is inserted
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