projection

来源： https://stackoverflow.com/questions/61050942/make-geopandas-dataframe-from-points-then-project-the-gpd-got-error-cannot-tr

问题 i have below entities Cart(id, cartNumber) - one Cart has many CartDetail CartDetail(id, quantity, total, cartId, productId) Product(id, name) - one Product has many CartDetail i also have corresponding DTO classes now using QueryDSL with DTO pattern i need to find out cart by id with following fields cartId, cartNumber, cartDetails(quantity, total, productName) currently this i am doing like below JPQLQuery<CartDto> jpqlQuery = query.select(new QCartDto(cart.id, cart.cartNumber, cart

问题 I'm new to MongoDB and getting to grips with its syntax and capabilities. To achieve the functionality described in the title I believe I can create a promise that will run 2 simultaneous queries on the document - one to get the full content of one item in the array (or at least the data that is omitted in the other query, to re-add after), searched for by most recent date, the other to return the array minus specific properties. I have the following document: { _id : ObjectId(

问题 I'm new to MongoDB and getting to grips with its syntax and capabilities. To achieve the functionality described in the title I believe I can create a promise that will run 2 simultaneous queries on the document - one to get the full content of one item in the array (or at least the data that is omitted in the other query, to re-add after), searched for by most recent date, the other to return the array minus specific properties. I have the following document: { _id : ObjectId(

问题 If you have the class: class Foo { Bar Bar { get; } = new Bar(); } class Bar { string Prop {get; set; } } You can use a object initialise like: var foo = new Foo { Bar = { Prop = "Hello World!" } } If you have a class class Foo2 { ICollection<Bar> Bars { get; } = new List<Bar>(); } You can write var foo = new Foo2 { Bars = { new Bar { Prop = "Hello" }, new Bar { Prop = "World" } } } but, I would like to write something like var items = new [] {"Hello", "World"}; var foo = new Foo2 { Bars = {

问题 I am VERY close to getting what I want out of this query... but I only want SOME of the fields returned and right now it is returning all of them NOTE : This is a refinement : I am now asking how to return only certain fields , while my similar question asks how to return the data between a start and end date In addition, can somebody please please provide an answer using the MongoDB Playground with MY data sets so I can try it out... I can't quite figure out how to "name" the data sets so

问题 I would like to get all Notifications between a start and end date that are related to a Register when I pass in a userId. Register Schema const mongoose = require('mongoose'); const Schema = mongoose.Schema; const RegisterSchema = new Schema({ userId: {type: Schema.Types.ObjectId, required: true}, accessToken: {type:String, required: true, default: null}, }) module.exports = Register = mongoose.model( 'register', RegisterSchema) Here is some register data [ { "_id": "5eac9e815fc57b07f5d0d29f

问题 I'm working with openGL but this is basically a math question. I'm trying to calculate the projection matrix, I have a point on the view plane R(x,y,z) and the Normal vector of that plane N(n1,n2,n3). I also know that the eye is at (0,0,0) which I guess in technical terms its the Perspective Reference Point. How can I arrive the perspective projection from this data? I know how to do it the regular way where you get the FOV, aspect ration and near and far planes. 回答1: I think you created a

问题 I'm working with openGL but this is basically a math question. I'm trying to calculate the projection matrix, I have a point on the view plane R(x,y,z) and the Normal vector of that plane N(n1,n2,n3). I also know that the eye is at (0,0,0) which I guess in technical terms its the Perspective Reference Point. How can I arrive the perspective projection from this data? I know how to do it the regular way where you get the FOV, aspect ration and near and far planes. 回答1: I think you created a

问题 I have a 3d object, and wish to export it in all direction.Suppose I have home picture and if I project it on 2d plane it only show me something like square but if I change angle it give me different view(In short I want different 2d projection of same 3d object for better visualization).I am looking for python library or algorithm which able to do that.Please ref diagram to get clear idea what i want.enter image description here 回答1: This can be done with the projective transformation. This