I would like to create a human oracle to give rewards to minigrid 2D navigation environment where I would like to get the obstacle identifier. Means, whether the agent has touched the obstacle. I'm using 'MiniGrid-SimpleCrossingS9N1-v0'. Is there any way in-build in minigrid world so that I can directly use the information?
Thanks in advance.
Related
Please is it possible to localize Hololens in specific map between application runs without using anchors? I would like to use coordinate system provided by SpatialStationaryFrameOfReference as it makes more sense for my use-case than anchors. However this would obviously result in different origin for each application run. Therefore I am looking for a way to get transform from SpatialStationaryFrameOfReference -> to absolute position in current map.
For example 3D view in device portal always shows Hololens in correct relation to current map - even when no anchors are placed in it. Therefore I thought it should be possible to do this also from application. So far I have only thought of placing some random anchor that would be then used to get a transform from the anchor’s coordinate system to that of the stationary reference frame (using TryGetTransformTo). I guess this should technically work, but I there might be also a better way, right? Thanks.
Another way to set the application's origin is to detect the QR code in the environment and establish a coordinate system. For more information please see:QR code tracking
So I have this application laid out but I am unsure on some aspects of how to go about it.
It's a website for dogs with cancer to supply a raw ketogenic diet for the user. There are other aspects of the website that I have figured out like where to hold state and such.
Where I'm a little confused on how to proceed is on the calculations for the ketogenic page shopping cart. The user can choose 1 fat source from the sources provided, one protein source and one green vegetable source. I want to make this as balanced and complete for the user for their dog- so obviously 1-protein 1 veg and 1 fat source is not balanced and complete. I need to factor in the amount of calories need per weight which I will have an input where the user can enter their dogs weight. I have done some of the math to make it complete and balanced on paper, factoring in amino acids, vitamins and minerals and the omega 6:3 ratio.
What I'm confused about is where am I going to hold all this data per se? It's a lot of data and it's based on many factors such as weight-activity, keto ratio like 1:1 or 2:1 depending what the user selects.
I obviously need a backend and need to build an API, but how would I return to the user the complete and balanced diet when so many other factors play in? Where would I store this other data? In objects? Variables? And then put it on the backend? I would greatly appreciate any help. Thanks in advance.
how are you? First of all, congrats on the great idea, I think it is great.
For starters, I think it's important for you, to lay down what technologies you'll be using.
1- Choose the technologies you are going to use. Will you use the MERN stack? React for front-end, mongo for the database, node.js for back-end with express.js as a framework?
2- Will you be the one providing all the data for the dog's diets? If not, find some website with an API for that data.
3- I am not any kind of expert on JS nor React.js, I'm just following the logic here. But does that data change? or is it always the same? I would advise you to use objects, so you can "play" with them, pass them around the classes (I would advise you to create a react class, where you store all of those objects, make sure you export that class)
4- Just lay everything out and START BUILDING!!! It sounds hella overwhelming to start such a big project, but once you get going some i's will be dotted, you will get a better understanding of what you actually are going to build.
5- Few tips, if you use an API you won't need to store the data, else store it on your database (JSON file, for example, there are great youtube tutorials on how to do so.)
Keeping this in mind, you asked where you'll be storing all that data, if you have an api, you won't store anything, if you don't, JSON is your best shot, it's really easy and intuitive to use and easy to read inside a react component.
I hope this gave you some extra clarification on what you'll need to do, in order to start.
PS: This answer is purely based on my limited React (and web dev) experience, I am no expert, let me know if there's anything else I can help you with.
I would like to use WebXR to build an application that displays some objects in the room in some predefined positions. Hence, by using the camera on my phone, I would be able to capture the real world surrounding me, with the superposition of computer-generated content. Basically augmented reality, but with the objects positioned according to the real world room and not to the x-y-z axes of the camera. To start simple, I wanted to build a model of my room and place the objects there, making them visible when using the app. Unfortunately, I can't find anything useful online. Does anyone know a solution to this or have some references to suggest me?
If you are very familiar with WebXR, please let me know because this technology is very new to me (and apparently to the world) and I would like to ask some questions :)
Thank you!
I want to use dataset at https://ingmec.ual.es/datasets/lidar3d-pf-benchmark/ in my project. The available map is .simplemap. What I understand is it stores both map and the robot poses as well. I want to get the point cloud representation of this map (which later I can convert into octomap) as well as vehicles ground truth pose in the map.
I have been able to get the CPose3DPDF from which I obtained CPose3d which I believe is the desired vehicle's ground truth pose. Please correct me if I am wrong. Now I have two problems. First the length of trajectory is just 97 which makes me suspicious about my code to obtain it. Second is about the CSensoryFrame which I obtain along with CPose3DPDF. When I get CObservation by doing CSensorFrame->getObservationByIndex and write to a file, it gives me idea that it stores velodyne readings. But I am unable to recover point cloud from it. Could anyone please guide me to a tool which can convert a .simplemap into a point cloud or an octomap representation and obtain vehicle's pose out of it as well. Many thanks in advance.
For the records: this one was answered here:
Your assumptions were all correct.
I realized the full UAL campus map was not included into the downloads. It's now available to download inside 2018-02-26-ual-campus-map.zip, at the bottom of this dataset page.
You can also regenerate the pointcloud, octomap from the .simplemap using the app application-observations2map.
Example .ini files can be found under MRPT/share/mrpt/config_files/*
You can also visually inspect .simplemap files with the robot-map-gui app.
I am in the process of developing some Use Cases for a mobile mapping/gps app. Users will be able to use this app similar to google maps. I was wondering if anyone had valuable input into some possible use cases.
Here are some I came up with myself:
1) Get Current Location
2) Set Destination Location
3) Create Fastest Route
4) View Alternative Routes
5) Traffic Estimation on Routes
If someone could help me elaborate or comment on my direction that would be helpful!
My first impulse was to flag your question as "too broad", as you basically ask to help you with your requirements analysis. But I give a few hints.
Your 5 use cases don't look bad. But they appear to be just a first rough sketch of the functionality of your app, that needs to be refined. A good model, be it UML or anything else, must be helpful for its reader to gain some insight. Now these 5 use cases could be named by any child who has seen a navigation device once in her life. To be meaningful, questions like the following should be asked and will probably lead to a more detailed use case analysis:
How are destination locations selected? If there is more than one place called Jacksonville, how will the user be informed, and how will she select the right one? Does selecting the location consist of more than one step, say country - city - road - block, to assist the user?
How do map data get into the application?
What kind of alternative routes are considered and how should they be calculated?
How will traffic data get into the application?
Try to put yourself into the developer's position. Which questions will she need to have clarified to build the right application?