mongo projection

Tags: ted his command LIS user Mon useful disk copy In Heyzap and Bugsnag I've been using MongoDB for more than a year, and I found it to be a very powerful database. As with other databases, it has some flaws, but there are some things I would like someone to tell me earlier.Even if the index selectivity count is slowFor example, when paging through a user feed, you might see something like that,In MongoDB, this count takes an order of magnitude longer than you want. There is an

Label: I. Overview Mongo db After download down how we should install boot and configuration to use Mongo db, this blog will tell you about Mongo DB installation start-up and configuration detailed. Second, installation 1. Download MONGO DB

Transform allows UI elements to twist and rotate without changing the geometric shape and position of the logic, just like watching an object with a magnifier. All attributes of the transform type can be changed. Rotatetransform, scaletransform, and translatetransform are inherited from the transform class. Next we will create a new project transformtest for practical use. Put a button on the screen: Next, add a rotation change to the button. Angle specifies the rotation angle. The default r

When tracking meanshift objects, there is a step in the middle called histogram reverse projection, So I implemented this step first. The histogram reverse projection is simply template matching. If a small target template is given, the original image and the template image are traversed one by one, and the same image blocks are compared, save the comparison result to a new image. The global extreme value i

for transparent objects are to be drawn in the order of the first far back), At this point the value of the depth buffer does not change with the depth value of the opaque object drawn later. Next, each transparent object is drawn in the order of the first and last close. Reference 1:http://blog.csdn.net/shuaihj/article/details/7228882Reference 2:http://blog.csdn.net/j123kaishichufa/article/details/6603888Reference 3:http://blog.sina.com.cn/s/blog_6c8369530100m0x8.htmlGlortho is the creation of

From: http://zhihu.esrichina.com.cn/?/question/6858Workaround ":First create a custom geotransformation, and then use Igeometry.projectex for the projection transformation. Reference code (take wgs1984 to Xian80 as an example):private void Func1toolstripmenuitem_click (object sender, EventArgs e) {Type t = type.gettypefromprogid ( Esrigeometry.spatialreferenceenvironment); System.Object obj = activator.createinstance (t); Ispatialreferencefactory srfa

Geographic coordinate system geographic the coordinate system spherical coordinate system is measured in latitude and longitude. Requires ellipsoid and geodetic planeGeodetic coordinates geodetic coordinate the position of the ground point P is expressed by the geodetic longitude L, latitude B and the earth height H. The earth height is the distance from the ground point along the normal to the reference ellipsoid.Wanli Network: A grid consisting of two sets of parallel lines parallel to the

The LAND3 data in the AMSR-E (http://nsidc.org/data/amsre/index.html) data is HDF-EOS4 format, and the projection is Cylindrical_equal_area. Here the sample reads the data and projects it to the latitude and longitude projection.Script Program:#Add Data Filefn ='AMSR_E_L3_DAILYLAND_V06_20091231.HDF'F= AddFile (Os.path.join ('D:/TEMP/HDF', FN))#vname = ' d_soil_moisture 'VName ='A_tb36.5h_ (res_1)'Data= F[vname][::-1,:]data[data==0] = 9999Data.fill_val

two-dimensional points (three rows and column X3) Warpperspective (): transmits and transforms the input image. Perspectivetransform (): Perform transmission transformation on two-dimensional or three-dimensional vectors, that is, perform projection transformation on the input two-dimensional coordinate points or three-dimensional coordinate points. Estimateaffine3d: Calculate the optimal three-dimensional affine transformation matrix H b

Blend Mode: Photoshop offers a variety of blending modes, but CSS3 shadows only support normal mode.Color: the shadow color. Corresponds to the value in the CSS3 shadow color .Opacity (opacity): The opacity of the shadow. The value in the color that corresponds to the CSS3 shadow rgba() a .Angle (Angle): The angle of the projection. Distance (Distance): The distance of the shadow.The X-offset and Y-offet in the CSS3 shadow can be converted according t

Projection query--Filter some fieldsThe returned list collection element is object[]Query query = Session.createquery ("Select C.cname, c.csex from Customer C"); List List = Query.list (); Iterator iter = List.iterator (); object[] Objs = Null;while (Iter.hasnext ()) {Objs = (object[]) ITER . Next (); for (int i = 0; i Paging QueryThe returned list collection element is an objectQuery query = session.createquery ("Select C from the Customer C left joi

Using Apple Watch to control PowerPoint playback and Desktop projection, applepowerpoint [Abstract] Apple Watch got started for a week and tried some interesting functions. Here we take the iOS version of PowerPoint to adapt to Watch as an example to explain how to use Watch to make a cool playing controller. [Preparation] Apple Watch paired with iPhone PC or Mac (Windows 10 Technical Preview is used as an example) Wi-Fi network Projector [Meth

Box-shadow is the addition of a perimeter shadow effect to the element block, and the conversion of the Photoshop projection to the Box-shadow in the CSSText-shadow is to add a shadow effect to the text, and Box-shadow to add a perimeter shadow effect to the element block.The basic syntax is {box-shadow:[inset] x-offset y-offset Blur-radius Spread-radiuscolor}"Mixed Mode": Photoshop offers a variety of blending modes, but the CSS3 shadow only supports

"alt=" Wkiol1jbysgzicf5aaa4dwhvkie239.png-wh_50 "/>The contents of the 10.Hibernate configuration file Hibernate.cfg.xml are as follows11. Create the test directory in the project to store testing files, file name Manageforum, package name (Com.mycompany.demo.bean), directory structure650) this.width=650; "Src=" https://s1.51cto.com/wyfs02/M01/8F/57/wKiom1jbYYDxYa5cAAA1zpL-j34055.png-wh_500x0-wm_ 3-wmp_4-s_2172248738.png "title=" Qq20170329152216.png "alt=" Wkiom1jbyydxya5caaa1zpl-j34055.png-wh

　　In this article we will learn about the projections in the Photoshop layer style, the tutorials detailing the effects and settings of the various options for the projection, which is helpful for PS beginners to learn about the PS layer style. After adding a projection (DropShadow) effect, an outline and the same "shadow" of the layer's contents appear below the layer, which has a certain offset and is of

1. Open WPS on the Apple phone and find "tools" in the application interface, as shown in the following figure. 2. Then we will see the "Wireless Projection" column in the tool, click Enter, as shown in the figure. 3. This goes into the wireless projection switch 4. Before these we must have installed the AirPlay software first, My computer has installed the Airpay software, here I choose the compu

1, Light projection collision: First person sight in preset range (e.g. 3 m) and objects seen collide① script to detect ray-casting collisions is added on first-person Fpscontroller#pragma strictprivatevarCurrentdoor:gameobject;varHit:raycasthit;functionUpdate () {varFWD =transform. Transformdirection (Vector3.forward); //true when Ray casts intersect with any collider, otherwise false if(Physics.raycast (transform.position,fwd,hit,18)){ //

This article mainly introduces the visual effects of PS in flat and long projection. The tutorial is simple and suitable for beginners to learn. Final effect Step 1 create a backgroundCreate a new canvas with a size of 840*400. you can use a solid color as the background or use a gradient tool to create a canvas. the color value here is # e0e0e0, which is not described here. Step 2 create a shapeSelect the rectangle tool. The size is 100px, the ra

Whether it is a design or a movie to play the game coding, multi-screen can always bring convenience. Screen projection requires a connection screen: Connect via VGA cable, connect via HDMI cable, or connect wirelessly.Introduction Win10 Implementing Screen projection settings: https://jingyan.baidu.com/article/3a2f7c2e33280f26afd61184.htmlHere are some of the issues you need to be aware of when you are pla

DifficultiesNormal elements add Border-radius the resulting shape adds box-shadow to the perfect effect. But when ordinary elements add pseudo-elements or translucent decorations, Box-shadow will be a little overwhelmed. Because Boder-radius will shamelessly ignore the transparent part.Scene:1. Translucent image, background image, Border-image2 a dot, dashed, or translucent border, but no background3. Dialog bubbles generated by pseudo-elements4. Chamfer shape5. Chamfer shape6. Diamond ImageTo s