I tried my's best by finding a answer in Google . But all I think that it's not accordant with my case .
Please give me a guide . Thank you very much .
If you were I , you can Uninstall + Install Visual Emprise .
This's reasons takes me many times .
Thank you everyone who help me in my difficulty .
You can add a reference directly to the DLL using the #r directive in your script.
#r "../packages/FSharp.Charting.0.91.1/lib/net45/FSharp.Charting.dll"
open FSharp.Charting
Right click on Fsharp.Charting reference in the references section of visual studio, and send to Fsharp.Interactive
then the below code will work
open FSharp.Charting
Chart.Line [ for x in 1.0 .. 100.0 -> (x, x ** 2.0) ]
|> Chart.Show
Related
Create a new FSharp Console project via VS2015
Add FSharp.Data and FSharp.Charting nuget package.
In Program.fs import both the packages
open FSharp.Charting
open Fsharp.Data
After the import I am able to use functions provided in FSharp.Data package but not in FSharp.Charting.
NOTE: In case of script (.fsx) file, which created in the same project, I am able to use both after adding their reference.
I just wanted to to know if there are any steps i am missing for adding any reference in a .fs file. If yes then why does it work with respect to FSharp.Data package.
I think if you search SO you'll find a few examples of displaying charts with FSharp.Charting. It's not exactly clear what sort of error are you getting. Assuming you are on Windows this should work:
open FSharp.Charting
open System
[<STAThread>]
[<EntryPoint>]
let main argv =
Chart.Line [ for x in 0 .. 10 -> x, x*x ] |> Chart.Show
printfn "%A" argv
0 // return an integer exit code
You will need to add references to System.Windows.Forms, System.Windows.Forms.DataVisualization and System.Drawing.
I am having trouble loading the csv files with FSharp.Data csv provider provided by fslab, including the sample adwords.csv file.
What does this error below mean? Also, when I hover over the code in the Visual studio editor it mentions that "The given key was not present in the dictionary"
Problem example:
#load "packages/FsLab/FsLab.fsx"
open System.IO
open FSharp.Data
"adwords.csv"
|> File.ReadAllLines
let test = CsvProvider<"adwords.csv">.GetSample()
The output:
>
val it : string [] =
[|"Criteria ID,Name,Canonical Name,Parent ID,Country Code,Target Type,Status";
"1000010,Abu Dhabi,"Abu Dhabi,Abu Dhabi,United Arab Emirates",9041082,AE,City,Active";
"1000011,Ajman,"Ajman,Ajman,United Arab Emirates",9047096,AE,City,Active";
"1000012,Al Ain,"Al Ain,Abu Dhabi,United Arab Emirates",9041082,AE,City,Active";
"1000013,Dubai,"Dubai,Dubai,United Arab Emirates",9041083,AE,City,Active";
"2004,Afghanistan,Afghanistan,,AF,Country,Active"|]
>
>System.MethodAccessException: Attempt by method '<StartupCode$FSI_0007>.$FSI_0007.main#()' to access method 'FSharp.Data.Runtime.CsvFile`1<System.__Canon>.Create(System.Func`3<System.Object,System.String[],System.__Canon>,
at <StartupCode$FSI_0007>.$FSI_0007.main#() in C:\test.fsx:line 11
Stopped due to error
I ran into this problem with my own files, so I grabbed this sample file from here: https://raw.githubusercontent.com/fsharp/FSharp.Data/master/tests/FSharp.Data.Tests/Data/Adwords.csv
Debug info:
If I delete the FSharp.Data library folder (v 2.3.0) and replace with version 2.2.5 it works correctly with no error.
If I don't use the FsLab.fsx script and instead use
#I "packages/FSharp.Data/lib/net40
#r "FSharp.Data.dll"
then everything works.
The path to the FsLab.fsx script is correct, it runs when I send the line to fsi.
The F# version is 14.0.23413.0.
The version of FSharp.Data downloaded by FSlab is FSharp.Data.2.3.0.
I have no other references in the .fsx script.
I am using Visual Studio Community edition 14.0.24720.00 Update 1.
.NET version 4.6.01038
I am realizing now that I am not getting the popup asking if I want to allow the .dll like I think I used to get when I used this before.
There is nothing wrong with the file. This for example works:
#load #"..\..\FSLAB\packages\FsLab\FsLab.fsx"
open System.IO
open FSharp.Data
[<Literal>]
let csvFile = #"C:\tmp\adwords.csv"
File.Exists csvFile
type Csv = CsvProvider<csvFile>
let csv = Csv.Load(csvFile)
csv.Rows
There is something wrong with your FsLab of FSharp.Data installation or type providers security maybe. Try the following, specify the path to the file directly. If it still doesn't work just nuget FSharp.Data and try using the csv type provider directly in a new project.
Other info is also helpful. VS version, FSLab version, wha other references you have. etc.
EDIT: Thanks for the debug info. That's actually quite helpful. VS2015 Update 1 broke two things, the Binding Redirect for Fsharp and the type providers (that might have been FSharp Tools, I forgot). I would upgrade to Update 2. If that's not possible please check if your FSharp.Data.TypeProviders.dll is in C:\Program Files (x86)\Reference Assemblies\Microsoft\FSharp\.NETFramework\v4.0\4.3.0.0\Type Providers.
As referencing the dlls directly works, it's probably a version mismatch issue. My FsLab install predates VS2015 Update 1 and 2, so will see if it behaves differently with a new download.
There is some issue with the installation of FSharp.Data currently bundled with FsLab (as of June 2016). This issue is with version 2.3.0. If you instead use FSharp.Data 2.2.5 the code works as expected.
Delete the packages/FSharp.Data folder and replace with version 2.2.5. I did it from an old installation but you could do it from Nuget
Hi i'm a noob and asking this newbie question, please forgive me.
I've installed successfully FSharpChart in my local directory
...
Added package 'MSDN.FSharpChart.dll.0.60.0' to folder 'C:\Users\Fagui\Documents\GitHub\Learning Fsharp\Expert in F\packages'
Added package 'MSDN.FSharpChart.dll.0.60.0' to 'packages.config'
Successfully installed 'MSDN.FSharpChart.dll 0.60.0' to Expert in F
now, if i do
#load "FSharpChart.fsx";;
^^^^^^^^^^^^^^^^^^^^^^^
stdin(4,1): error FS0078: Unable to find the file 'FSharpChart.fsx' in any of
C:\Users\Fagui\AppData\Local\Temp
additional info:
inside this folder, i see a nupkg file, and a lib directory
Inside the lib directory, there is a dll, and a pdf file,
but i don't see any .fsx file.
basically, F# has installed the package in the active folder for the current project, and F#interactive is in another folder ?? bit strange ?
should i install another time the package ? or what is the way around it ?
thanks
UPDATE:
i don't know why, but apparently when i installed the FSharpChart package, I only got the dll, no fsx file
i managed to load it doing
#I #"C:\Users\Fagui\Documents\GitHub\Learning Fsharp\Expert in F"
#r #"packages\MSDN.FSharpChart.dll.0.60\lib\MSDN.FSharpChart.dll";;
unfortunately, typing the script in F# interactive
open MSDN.FSharp.Charting
let rnd = System.Random()
let rand() = rnd.NextDouble()
let randomPoints = [for i in 0 .. 1000 -> 10.0 * rand(), 10.0 * rand()]
randomPoints |> FSharpChart.Point;;
doesn't yield any chart, but just returns a list
val rnd : Random
val rand : unit -> float
val randomPoints : (float * float) list =
[(9.765916457, 2.272289941); (0.8211438594, 1.625466995);
...
(7.783786034, 7.572208311); (6.497914692, 3.66987128); ...]
val it : ChartTypes.PointChart
this may be due to the fact that the library is not supported anymore, and that i should use a newer library like Thomas Petricek indicated.
So, i did manage to install FSharp.Charting instead
let rnd = System.Random()
let rand() = rnd.NextDouble()
let randomPoints = [for i in 0 .. 1000 -> 10.0 * rand(), 10.0 * rand()]
randomPoints |> Chart.Point;;
and it did work
There is a newer version of the FSharpChart.fsx library which is called F# Charting, so first of all, I would recommend using this newer library instead (the API is quite similar, but F# Charting has a number of improvements).
The documentation for F# Charting also has a detailed page on referencing the library.
Typically, when you reference the library using NuGet, you'll need to specify relative reference:
// On Mac OSX use packages/FSharp.Charting.Gtk.0.90.13/FSharp.Charting.Gtk.fsx
#load "packages/FSharp.Charting.0.90.13/FSharp.Charting.fsx"
Where 0.90.13 is the version of the library that you got from NuGet (you may need to check the folder name - the path references in #load are relative to the place where your script lives).
Yes, F# Interactive is independent of the current project.
Use:
#load #"C:\Users\Fagui\Documents\GitHub\Learning Fsharp\Expert in F\packages\FSharpChart.fsx";;
Also you can use the #I directive if you need to reference assemblies of a specific folder, see the reference.
Am a beginner to OpenCV and have gone so far as to work out the hello world samples, inverting, color conversion(RGB->greyscale ) etc programs working.
However i am stuck at the Programs that use cvCanny, cvPyr and other such feature detectors.Would really be thankful if the tiny prblem was sorted out .
I get the Error: error C3861: 'cvPyrDown': identifier not found
error C3861: 'cvCanny': identifier not found
I've included the imgproc and features2d headers yet the problem persists.
What am I missing out ?
Do you have your "Additional input directories" property set correctly?
Mine, configured by cmake, looks like this:
C:/OpenCV-2.2.0/release
C:/OpenCV-2.2.0/include
C:/OpenCV-2.2.0/include/opencv
C:/OpenCV-2.2.0/modules/core/include
C:/OpenCV-2.2.0/modules/imgproc/include
C:/OpenCV-2.2.0/modules/features2d/include
C:/OpenCV-2.2.0/modules/gpu/include
C:/OpenCV-2.2.0/modules/calib3d/include
C:/OpenCV-2.2.0/modules/objdetect/include
C:/OpenCV-2.2.0/modules/video/include
C:/OpenCV-2.2.0/modules/highgui/include
C:/OpenCV-2.2.0/modules/ml/include
C:/OpenCV-2.2.0/modules/legacy/include
C:/OpenCV-2.2.0/modules/contrib/include
C:/OpenCV-2.2.0/modules/flann/include
Btw. CMake is a nice tool if you are dealing with libraries that contains many include files, line OpenCV.
You can also check two other things:
After compiling OpenCV2.2 from sources, did you built "INSTALL" project in the OpenCV VS solution?
If you are using c++ headers, you might prefer c++ version of those functions,
in the cv namespace:
cv::Canny(...)
That sounds like a link error rather than any problems with include. Are you sure you are linking with cv.lib?
You need to add the $(OPENCV_ROOT)/lib directory to the linker path so it knows where to search for the files.
From the description, I assume you're using Visual Studio? If so, you have two options for doing so.
Add it to this project under Project -> Properties -> Linker -> General -> Additional Library Directories.
Add it for all projects: Tools -> Options -> Projects and Solutions -> VC++ Directories -> Library files. And then add folders there.
I'm trying to write some Office automation code and I cannot get IntelliSense help for the PIA Office types. The strange thing is that it works fine in C# and also in the Tutorial.vs2010 F# Solution with some of the same code.
I'm using VS10 and PIA for Office 14.
VS
Any ideas?
I forgot to include a reference to Office.dll. That appeared to fix the issue.
For anyone finding this later, but can't figure out where office.dll is, like I did. I faced the same Issue with F# 4.0, Office 2013, and VS Community 2015 Update 2.0
I typed this in the beginning of the file to get Intellisense working, no need to search for office.dll in your machine:
#r "office, Version = 15.0.0.0"
This is the same text it gives you with <Note>, but without the Culture=neutral and PublicKey=w/e. Seems to work flawlessly.
For context, this is how my file starts:
#r "Microsoft.Office.Interop.Excel"
#r "office, Version = 15.0.0.0"
open System
open System.IO
open System.Reflection
open Microsoft.Office.Interop.Excel
let app = ApplicationClass(Visible = true)
let sheet = app.Workbooks
.Add()
.Worksheets.[1] :?> _Worksheet