tigris | Download and use Census TIGER/Line shapefiles in R | Analytics library

I'm trying to generate census tracts geoids for a batch of addresses. When I use the "append_geoid" function in the tigris package, r returns "Error in call_geolocator(as.character(address$street[i]), as.character(address$city[i]), : Bad Request (HTTP 400)".

I used the example data given in the r documentation and it produced the same result. Code below. Any help on how to solve the issue is appreciated!

I'm currently working on this simple application to create a quiz of ten questions and make it random. This is my progress so far, the questions are random which is what I need, but the problem is the questions are repeating and I only need them to show once. Please help me to fix this bug.

activity_quiz.xml:

I'm making a memory game in C#. It has 10 pairs of cards, total 20. It's supposed to work like this: When pressing the Start button, the game shuffles randomly the cards and reveals all cards. After 3 seconds it flips them. Then, the player has to find all pairs.

I'm having a problem with shuffling. I wrote this code. It's being executed when I press the Start button:

I would like to create evenly spaced polylines going North to South with 50 mile spacing between each line and 10 miles long. Not sure if this is possible using sf package. In the example below, I would like to have the lines filling the counties across the state of Washington.

I am trying to make a choropleth map as an html widget using the leaflet package. I don't want to deal with shiny for this. I have covid death time series data for each state. I would like to be able to click on states and have the corresponding time series graph to popup. I have gotten so close but my problem is that the graphs that popup when you click on a state do not correctly correspond to that state. For example, if you click on Ohio a West virginia map pops up.

Shapefile data: https://www.census.gov/cgi-bin/geo/shapefiles/index.php?year=2019&layergroup=States+%28and+equivalent%29

Covid data: https://data.cdc.gov/Case-Surveillance/United-States-COVID-19-Cases-and-Deaths-by-State-o/9mfq-cb36

Once upon a time there was the open source collaboration platform tigris.org. Tigris.org will shut down on July 2020 and is not accessible anymore. I need an old file from it for a commercial project:

I am trying to creating a choropleth map of poverty by census tract in New Orleans, using the packages censusapi, tigris, and ggplot2. I looked up the following table IDs, using listCensusMetadata(), to get the data that I want:

B17020_001E: Estimate!!Total - POVERTY STATUS IN THE PAST 12 MONTHS BY AGE

B01003_001E: Estimate!!Total - TOTAL POPULATION

These seem right, but when I call these tables, they have almost the exact same values. As a result, it looks like almost every Census tract has 100% poverty. How do I know which tables to use and whether the tables that I am using are correct?

This is my code.

I'd like to keep the census tracts that comprise a larger census geography. The tracts should fit within the larger geography perfectly.

I can do this with a negative buffer, but is there a better way to do this?

I am trying to find the best way of obtaining: the length of the longest line from the center of a polygon to its edge.

In the code below, I download the polygon data of the 75254 zip code located in Texas, USA. I then determine the location of its center with sf::st_centroid() and I plot the geometries using the tmap package.