effector | Business logic with ease ☄️ | Frontend Framework library

How do I visualize different coordinate frames in drake when using the LCM visualizer, such as the body frame attached to the end effector of the Kuka?

I have a setup where a (2D) camera is mounted on the end-effector of a robot arm - similar to the OpenCV documentation:

I want to calibrate the camera and find the transformation from camera to end-effector. I have already calibrated the camera using this OpenCV guide, Camera Calibration, with a checkerboard where the undistorted images are obtained.

My problem is about finding the transformation from camera to end-effector. I can see that OpenCV has a function, calibrateHandEye(), which supposely should achieve this. I already have the "gripper2base" vectors and are missing the "target2cam" vectors. Should this be based on the size of the checkerboard squares or what am I missing? Any guidance in the right direction will be appreciated.

I have simple example here to replicate my problem. I'm trying to create kind of generic client handler. When client connects via TCP server i invoke clientFx effect to create the client instance.

Let's say i will have different TCP servers they all have common clientFx, but different way to handle incoming data. Thats why i have handleData function, which returns 2 events, input event onData and output event onPayload, which returns parsed payload.

I ended here in client.done.watch function, becouse i feel that define handling dataflow inside watch is not correct way to do so.

Is this good way to go or am I totally wrong?

I'm using React Hooks and Effector to try and render data onto a card. The data will be driven off a React-Select dropdown (which represents different countries), and the idea is that the user will be able to add selections based on those countries, kind of like a TODO app.

However, I'm finding that whenever I go back to a previous dropdown selection, the data doesn't save. I'm using effector, hooks, react-select and react-jss for styling. The team gets passed as a prop from a React-Select component.

Trying to configure a basic color detection in my ROS project, I got stuck in this: I have two python scripts where "programa.py" is my main robot program and the "camara.py" is my openCV color detection script.

Right now I can change the color detection publishing a string message when camara.py is running:

I have been given an output in R, and I wish to copy and paste the output into other Microsoft applications. However, each line is numbered. How do I remove the numbers?

For example:

I need to extract the journal titles from a bibliography list. The titles are all within quotation marks. So is there a way to ask R to extract all text that is within parenthesis?

I have read the list into R as a text file:

"data <- readLines("Publications _ CCDM.txt")"

here are a few lines from the list:

Andronis, C.E., Hane, J., Bringans, S., Hardy, G., Jacques, S., Lipscombe, R., Tan, K-C. (2020). “Gene validation and remodelling using proteogenomics of Phytophthora cinnamomi, the causal agent of Dieback.” bioRxiv. DOI: https://doi.org/10.1101/2020.10.25.354530 Beccari, G., Prodi, A., Senatore, M.T., Balmas, V,. Tini, F., Onofri, A., Pedini, L., Sulyok, M,. Brocca, L., Covarelli, L. (2020). “Cultivation Area Affects the Presence of Fungal Communities and Secondary Metabolites in Italian Durum Wheat Grains.” Toxins https://www.mdpi.com/2072-6651/12/2/97 Corsi, B., Percvial-Alwyn, L., Downie, R.C., Venturini, L., Iagallo, E.M., Campos Mantello, C., McCormick-Barnes, C., See, P.T., Oliver, R.P., Moffat, C.S., Cockram, J. “Genetic analysis of wheat sensitivity to the ToxB fungal effector from Pyrenophora tritici-repentis, the causal agent of tan spot” Theoretical and Applied Genetics. https://doi.org/10.1007/s00122-019-03517-8 Derbyshire, M.C., (2020) Bioinformatic Detection of Positive Selection Pressure in Plant Pathogens: The Neutral Theory of Molecular Sequence Evolution in Action. (2020) Frontiers in Microbiology. https://doi.org/10.3389/fmicb.2020.00644 Dodhia, K.N., Cox, B.A., Oliver, R.P., Lopez-Ruiz, F.J. (2020). “When time really is money: in situ quantification of the strobilurin resistance mutation G143A in the wheat pathogen Blumeria graminis f. sp. tritici.” bioRxiv, doi: https://doi.org/10.1101/2020.08.20.258921 Graham-Taylor, C., Kamphuis, L.G., Derbyshire, M.C. (2020). “A detailed in silico analysis of secondary metabolite biosynthesis clusters in the genome of the broad host range plant pathogenic fungus Sclerotinia sclerotiorum.” BMC Genomics https://doi.org/10.1186/s12864-019-6424-4

I got a list that contains 9 data frames and each data frame contains the following lines:

I have been refreshing my JavaScript knowledge of call() and map() usage on NodeList.

It was fairly easy to google out, what call() should be doing and there are resources with examples of how it works with map().

However, as I noticed on MDN, the map() function can also take a second argument, which should be setting the this keyword for map() - or at least that is what I think it should be doing.

I have tried to check it myself with simple arrays: