railroad | class diagrams generator for Ruby on Rails applications
kandi X-RAY | railroad Summary
kandi X-RAY | railroad Summary
RailRoad generates models and controllers diagrams in DOT language for a Rails application.
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QUESTION
I'm trying to join two dataframes. One is home sale data and the other is distance from a railroad. I am trying to join the data using a parcel ID as a key. The parcel ID in the sales data will have multiple values, because the parcels have sold several times. I want the data to join so that the distance values will repeat for each instance of the parcel ID, something like this.
Dataframe A:
ID Sale Date Sale Price 123 1/1/2020 320000 123 2/1/2021 429000 124 3/1/2019 190000 124 2/13/2020 280000 124 1/1/2022 419000 125 2/1/2021 300000 125 1/1/2022 390000 126 2/1/2021 310000Dataframe B:
ID Distance 123 1290 124 1809 125 370 126 976I want the joined dataframe to look like this:
ID Sale Date Sale Price Distance 123 1/1/2020 320000 1290 123 2/1/2021 429000 1290 124 3/1/2019 190000 1809 124 2/13/2020 280000 1809 124 1/1/2022 419000 1809 125 2/1/2021 300000 370 125 1/1/2022 390000 370 126 2/1/2021 310000 976The distance values are copied for each parcel ID. When I use left_join I'm getting a new dataframe with more rows than either of the original dataframes (which is one problem) with a lot of NA values for distance (which is another problem). I don't understand why my new dataframe is larger than the largest of the original dataframes, and I don't know how to make it so that distance is repeated across each instance of the parcel ID and not just copied once and then NA thereafter.
When I searched for a solution for this problem, I mostly found methods of dropping duplicate rows, which I don't want. I want the rows in dataframe B to be copied for each instance of the ID in dataframe A.
...ANSWER
Answered 2022-Apr-16 at 10:12You can use left_join
by your ID
from the dplyr
package. You can use the following code:
QUESTION
I'm new to Python (started a few days ago) and I've been trying to code Monopoly (with reference of a different user's code) and I can't seem to get past a specific error stating that my 'Game' object has no attribute 'square_number'
...ANSWER
Answered 2022-Apr-02 at 23:21Your "Game" class only has constructor method and running_game method. The "square_number" is in the Player class and it is available upon initialization.
In the code above, I have noticed that you are trying to call class method without initializing the object. For instance,
QUESTION
I have an Oracle SQL query and running the query, it gives ORA-00936: missing expression. When I hover over the red in Oracle Sql Developer, it says "Syntax Error. Partially Recognized Rules, railroad diagrams. I think there's something wrong with my Group By. I think Group by needs to have all query columns in it, but I know the last 3 are min/max/avg, so I don't think it makes sense to add those to the group by separately. What is the proper way to add them to the group by?
...ANSWER
Answered 2022-Mar-07 at 18:17What's obvious, is
QUESTION
For my first project I wanted to create a terminal implementation of Monopoly. I have created a Card, Player, and App structs. Originally my plan was to create an array inside the App struct holding a list of cards which I could then randomly select and run an execute() method on, which would push a log to the logs field of the App. What I thought would be best was this:
...ANSWER
Answered 2022-Mar-01 at 01:45Does a card need to be able to mutate the cards in self? If you know that execute
will not need access to cards
, the easiest solution is to split App
into further structs so you can better limit the access of the function.
Unless there is another layer to your program that interacts with App
as a singular object, requiring everything be in a single struct to perform operations will likely only constrain your code. If possible it is better to split it into its core components so you can be more selective when sharing references and avoid needing to make so many fields pub
.
Here is a rough example:
QUESTION
I am hoping that I can find a way to resize an uploaded image file before it is put into the database. I am new to Django with REST, so I am not sure how this would be done. It seems that whatever is serialized is just kind of automatically railroaded right into the model. Which I suppose is the point (it's certainly an easy thing to setup).
To clarify, I already have a function tested and working that resizes the image for me. That can be modified as needed and is no problem for me. The issue really is about sort of "intercepting" the image, making my changes, and then putting it into the model. Could someone help me out with some ideas of tactics to get that done? Thanks.
The Model:
...ANSWER
Answered 2022-Feb-18 at 20:17You can use validate
method to validate and/or change the values from data
dictionary.
QUESTION
I am working on a project to have a random word guessing game. So far most of the code is working but I am trying to implement some rules on the length of words displayed to the user as a measure of game difficulty (shorter words = easier, etc). I am using a drop-down menu to get the user's setting selection, and then have rules in the JS tags that are supposed to be handling this.
After toying around with this for several days, I was hoping that a fresh pair of eyes might have a suggestion about where I am going wrong to be able to enforce the rules I am trying to enforce?
The specific functions that should be handling this are setDifficulty(), getSelection(), and randomWord()
ANSWER
Answered 2021-Dec-02 at 00:06Let's start by saving the difficulty setting in a variable along these :
QUESTION
Need help in React…I converted the complex xml file into js object format. After converting the xml file, the js object are stored in ress variable that is showing in the picture. We are storing the different partial transcript in different variables. Is there any way to do it using loop and split it with regular expression in each iteration. So it would he easy for me to use map method instead of calling the component again and again for each partial transcript.
...ANSWER
Answered 2021-Nov-14 at 16:18you can try this :
QUESTION
I was given the task to create an NYC Guide project out of Python and Django. I am iterating through a nested dictionary to render boroughs, activities, and venues. The home page lists a handful of boroughs. The boroughs page lists a handful of activities in each borough. The activities page lists a handful of venues to select. My issue is when I click on one of the activities I receive a TracebackError. I am trying to at least render the venues page that has a simple 'VENUES PAGE' on it. I'd love any advice or feedback. This is my first Django project so forgive me if I didn't explain this thoroughly enough. Feel free to ask for further explanation! What I am ultimately trying to do is render an unordered list of venues for each activity in the activities page. I would like each li to be a url that takes me to the venue.html page. It doesn't have to render a specific venue. I can take it from there. I am stuck on this one step. I have already successfully rendered the borough and activities pages, and I have been able to loop through the activities, but when I click on a specific activity I get this error:
"TypeError at /brooklyn/beaches activity() missing 1 required positional argument: 'venues'"
...ANSWER
Answered 2021-Nov-02 at 02:04URLS.PY
QUESTION
I'm a complete newcomer to python and trying to write code to open all of the links a list one at a time. I keep running into different errors no matter what I do to try to troubleshoot and am wondering if there's something wrong with my methodology.
This is my code:
...ANSWER
Answered 2021-Jun-19 at 04:46The following should work:
QUESTION
I'm working with Python 3.5.2 and I'm trying to get a dictionary ordered by key by using OrderedDict
.
Here is what I'm trying:
...ANSWER
Answered 2021-May-12 at 06:28Dictionaries are not insertion ordered in Python 3.5.
You are instantiating the ordered dicts with arbitrarily ordered regular dicts. Construct each of the ordered dicts from a list of (key, value) tuples.
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Install railroad
On a UNIX-like operating system, using your system’s package manager is easiest. However, the packaged Ruby version may not be the newest one. There is also an installer for Windows. Managers help you to switch between multiple Ruby versions on your system. Installers can be used to install a specific or multiple Ruby versions. Please refer ruby-lang.org for more information.
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