remedy | RStudio Addins to Simplify Markdown Writing | Data Visualization library
kandi X-RAY | remedy Summary
kandi X-RAY | remedy Summary
{remedy} provides addins to facilitate writing in markdown with RStudio. All the functions are meant to be mapped to keyboard shortcuts. A list of suggested shortcuts is provided towards the end of this README.
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QUESTION
I am trying to solve a low thrust optimal control problem for Earth orbits, i.e. going from one orbit to another. The formulation of the problem includes six states (r_1, r_2, r_3, v_1, v_2, v_3) and 3 controls (u_1, u_2, u_3) with a simplified point model of gravity. When I specify the full initial state and half of the final state, the solver converges and yields a good solution. When I try the full final state, the problem is over constrained.
My thought on how to remedy this is to allow the trajectory to depart the initial orbit at any point along the orbital curve and join the final orbit an any point along the final orbital curve, giving it more degrees of freedom. Is there a way to constrain the initial and final values of all 6 states to a cspline curve? This is what I have tried so far:
ANSWER
Answered 2022-Apr-03 at 21:17It is generally much harder for an optimizer to exactly reach a fixed endpoint, especially when it depends on a complex sequence of moves. This often leads to infeasible solutions. An alternative is to create a soft constraint (objective minimization) to penalize deviations from the final trajectory. Here is an example that is similar:
QUESTION
I am a relative novice to R & ggplot. I am trying to plot an interaction. When I plot the interaction using SPSS - the regression lines go from the y-axis all the way to the opposite edge of the plot:
However, when I use ggplot, the regression lines only go as far as the first and last data point which makes the graph look strange
Is there any way to remedy this and make my ggplot look more like the SPSS plot?
Here is the code I am using
...ANSWER
Answered 2022-Feb-19 at 14:55geom_smooth has a fullrange option, which has a default value of FALSE:
Should the fit span the full range of the plot, or just the data?
Thus, you can use:
QUESTION
I am trying to compute the distance between vectors in two pandas dataframes using cdist from scipy.spatial.distance, but the output is all wrong and I can't pinpoint where is fails.
So, My original dataframes are of the type:
...ANSWER
Answered 2022-Jan-12 at 12:39As mentioned in scipy.spatial.distance's docs, XA and XB are supposed to be lists of the vectors of which you want to find the distance from one to the others. What you did in your code is make one long vector from all the vectors and comapare them when what i think you had to do was stack them. Although your exact intentions were not clear in your question, so i might be wrong.
QUESTION
What if an imported library spawns a goroutine that can panic? In this case, there is nothing a developer can do to stop the program from exiting.
Like in this code, calling a bad library with deferred recover does not help as the library is spawning a goroutine that panics, and it cannot be caught by the main's recover.
Do I understand it correct that the only remedy is to be very careful when choosing dependencies for one's project and hope that the authors do not do something similar?
...ANSWER
Answered 2021-Dec-30 at 15:58You're right, you can't do anything about that. Neither can you if a dependency calls os.Exit() for example.
Launching goroutines as a library is often bad practice anyway, let the client (user of the library) choose if concurrent execution (a goroutine) is wanted, adding the go keyword is trivial. There are exceptions of course.
QUESTION
In my company we have a API that's very tricky to handle. I managed to make a successful PUT Request using Postman and now I want to build this same http request in C# using a simple Console application.
Here is the postman request:
The 2nd key has to be named exactly like that. The entry Json I can use via file or directly as value.
Here are the headers:
Only important one is the Authorization Header.
The problemI don't know how to actually create this complicated request in C# since I'm very new to this language and couldn't find a solution to my specific problem.
I tried with the normal httpclient from C# and RestSharp but wasn't able to make this request.
Here is what I have so far:
...ANSWER
Answered 2021-Dec-24 at 14:00Please look at the code below, please test it at your environment.
The point is that you can set content types manually.
Another point is that you set Authorization header wrong.
QUESTION
I'm trying to create a function to check the quality of data (nans/nulls etc) I have the following code running on a PySpark DataFrame
...ANSWER
Answered 2021-Dec-23 at 14:29You can use df.dtypes to check the type of each column and be able to handle timestamp and date null count differently like this:
QUESTION
When publishing an ASP.NET Core 6 web application with C# 10's enabled to an Azure App Service from a Visual Studio 2022 publishing profile, the publishing build fails due to missing using statements.
C# 10 introduces the new implicit usings feature, where certain using directives are treated as global using directives based on the SDK. This can be enabled with the following csproj configuration:
ANSWER
Answered 2021-Nov-10 at 22:58First of all, it appears that this was a false alarm. I apparently neglected to finish rebooting my workstation after installing the release version of Visual Studio 2022. After restarting, I am now able to publish with full support for implicit usings. Whoops.
That said, this does provide a good opportunity to offer some insight into what I discovered after the fact, which may help future readers with similar types of issues—and certainly helped me better understand the integration between the various command-line tools.
Command-Line ArgumentsNotably, there doesn't appear to be any command-line parameters for handling implicit usings built into any of the following tools:
- .NET 6.0 SDK (
dotnet.exe) - Visual C# compiler (
csc.exe) - Microsoft Build Engine (
msbuild.exe)
Instead, this is handled via the Microsoft Build Engine (msbuild.exe) when working off of a C# project file (*.csproj), at which point it generates the following intermediate file at:
QUESTION
I have a simple FX example with a simple component.
...ANSWER
Answered 2021-Dec-11 at 05:04Why you get artifacts
I think a different approach should be used rather than fixing the approach you have, but you could fix it if you want.
You are adding new rectangles and lines to your XPane in listeners. Every time the height or width changes, you add a new set of nodes, but the old set of nodes at the old height and widths remains. Eventually, if you resize enough, performance will drop or you will run out of memory or resources, making the program unusable.
A BorderPane paints its children (the center and the XPanes) in the order they were added without clipping, so these old lines will remain and the renderer will paint them over some panes as you resize. Similarly, some panes will paint over some lines because you are building up potentially lots of filled rectangles in the panes and they are partially overlapping lots of lines created.
To fix this, clear() the child node list in your populate() method before you add any new nodes.
QUESTION
I'm using a small laptop to copy video files on location to multiple memory sticks (~8GB). The copy has to be done without supervision once it's started and has to be fast.
I've identified a serious boundary to the speed, that when making several copies (eg 4 sticks, from 2 cameras, ie 8 transfers * 8Gb ) the multiple Reads use a lot of bandwidth, especially since the cameras are USB2.0 interface (two ports) and have limited capacity.
If I had unix I could use tar -cf - | tee tar -xf /stick1 | tee tar -xf /stick2 etc which means I'd only have to pull 1 copy (2*8Gb) from each camera once, on the USB2.0 interface.
The memory sticks are generally on a hub on the single USB3.0 interface that is driven on different channel so write sufficently fast.
For reasons, I'm stuck using the current Win10 PowerShell.
I'm currently writing the whole command to a string (concatenating the various sources and the various targets) and then using Invoke-Process to execute the copy process while I'm entertaining and buying the rounds in the pub after the shoot. (hence the necessity to be afk).
I can tar cf - | tar xf a single file, but can't seem to get the tee functioning correctly.
I can also successfully use the microSD slot to do a single cameras card which is not as physically nice but is fast on one cameras recording, but I still have the bandwidth issue on the remaining camera(s). We may end up with 4-5 source cameras at the same time which means the read once, write many, is still going to be an issue.Edit: I've just advanced to play with Get-Content -raw | tee \stick1\f1 | tee \stick2\f1 | out-null . Haven't done timings or file verification yet....
Edit2: It seems like the Get-Content -raw works properly, but the functionality of PowerShell pipelines violates two of the fundamental Commandments of programming: A program shall do one thing and do it well, Thou shalt not mess with the data stream. For some unknown reason PowerShell default (and only) pipeline behaviour always modifies the datastream it is supposed to transfer from one stream to the next. Doesn't seem to have a -raw option nor does it seem to have a $session or $global I can set to remedy the mutilation.
How do PowerShell people transfer raw binary from one stream out, into the next process?
...ANSWER
Answered 2021-Dec-09 at 23:43May be not quite what you want (if you insist on using built in Powershell commands), but if you care about speed, use streams and asynchronous Read/Write. Powershell is a great tool because it can use any .NET classes seamlessly.
The script below can easily be extended to write to more than 2 destinations and can potentially handle arbitrary streams. You might want to add some error handling via try/catch there too. You may also try to play with buffered streams with various buffer size to optimize the code.
Some references:
-- 2021-12-09 update: Code is modified a little to reflect suggestions from comments.
QUESTION
I would like to declare a function akin to the following:
...ANSWER
Answered 2021-Dec-03 at 00:35Maybe something like this:
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