MStream | Anomaly Detection on Time-Evolving Streams | Predictive Analytics library
kandi X-RAY | MStream Summary
kandi X-RAY | MStream Summary
Anomaly Detection on Time-Evolving Streams in Real-time. Detecting intrusions (DoS and DDoS attacks), frauds, fake rating anomalies.
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QUESTION
Im doing a school project. and I was testing a login form for my app. I'm trying separately from my login form and a profile pic form. I have successfully managed to save the image to the access database but I have had quite a few problems trying to display it on a textbox on my form.
This is the whole app code:
...ANSWER
Answered 2021-Nov-23 at 06:49Do not declare connections or commands or datareaders at the class level. They all need to have their Dispose methods called. Using
blocks will have the declare, closing and disposing even if there is an error. Streams also need Using blocks.
Defaults for an OpenFiledialog
- Multiselect is False
- CheckFileExists is True
- CheckPathExists is True
- DereferenceLinks is True
- ValidateNames is True
- FileName is ""
Unless you are getting paid by the line, it is unnecessary to reset these values to their defaults.
I have alerted your Filter to exclude All Files
. You also had jpg appearing twice.
I declared a variable to hold the file extension, PictureFormat
, of the image file so you could provide the proper parameter for ImageFormat
.
When you retrieve the image field from the database it comes as an Object
. To get the Byte()
a DirectCast
should work.
QUESTION
Here is my code. Basically I am trying to stream android screen to vlc media player using rtsp somehow I have managed to stream video perfectly but audio is not playing. I am using AMRNB encoding method to send stream on Local Socket. I can see that there is audio track by using log also it is being send but don't know why it is not getting played.
...ANSWER
Answered 2021-Oct-09 at 13:02While debugging I foundout that I am using media recorder for audio and medicodecs for video that is why my media recorder was null and it couldn't start mediarecorder.
but still audio is not working
QUESTION
I wrote some code to show an array of bytes as an image. There is an array of bytes in which every element represents a value of 8-bit gray scale image. Zero equals the most black and 255 does the most white pixel. My goal is to convert this w*w-pixel gray-scale image to some thing accepted by pictureBox1.Image
.
This is my code:
ANSWER
Answered 2021-Sep-24 at 16:58As said in the comments - bitmap is not just an array. So to reach your goal you can create bitmap of needed size and set pixels with Bitmap.SetPixel
:
QUESTION
I have a 3D Photon Focus camera ( MV1-D2048x1088-3D06-760-G2-8) and I am using C# with the Pleora eBUS SDK version 5.1.1 on a Windows 10 machine. The camera is set to scan a laser line in LineFinder Mode, DataFormat3D = 2 and is returning the data (buffer Payload = 2 x 2048 = 4096 bytes). The payload seems correct. I want to save this data but I am having difficulty. How can I get the buffer into an array (or some structure) to save it to a file stream? My code is using the .DataPointer parameter from the Pleora eBUS SDK but I am not understanding what it is doing. The Manual I have included HERE - MAN075_PhotonFocus
...ANSWER
Answered 2021-Sep-23 at 18:45My current solution is to loop through the buffer by incrementing the pointer and save the bytes into a new array (MSB_array). The way this data is packed (see the attached image in the question) I had to read the next line and bitshift it over and add it to the byte in the MSB_array to get a
QUESTION
I created an Azure Bot Service. When I test the service using "Test in Web Chat" it works as expected. When I add the Web Chat channel and use the Web Chat URL, it works as expected.
However, when I add the Microsoft Teams channel, it does not work as I expected. The Health Status shows "Healthy" (in "Channels (Preview)") and "Running" (in "Channels"). When I select "Open in Teams", I am redirected to Teams, but I do not see the bot as a user/bot I can chat with. I watched a video showing just that behavior as I was expecting, but the link only opens my Teams. I only have one other user in Teams and that user shows up. No sign of the bot. What am I missing?
I tried using the "Get bot embed codes". I put in the URL for the Mstreams href and instead of sending me to the bot user as I expected, I am redirected to the other user on the account (not the bot). What am I missing?
I've tried this using the "Channels" and the "Channels (Preview)" sections with the same results.
If relevant, I am still in the trial period with Azure and have not upgraded, but nothing says this should be an issue.
From all I can tell, I'm logging into the Azure portal and the Bot Framework portal with the same account as my Teams account. I'm using latest updated version of Chrome.
...ANSWER
Answered 2021-Sep-13 at 12:28I don't think free account has anything to do with this. But the fact that the " bot embed codes" lead you to a different user, may be a configuration issue. Read Create a bot and Test and debug your Microsoft Teams bot in the Microsoft Teams documents for more information.
If you have successfully deployed to teams channel (teams channel registration), as per docs Copy the https part of the code that is shown in the Get bot embed code dialog.
For example, https://teams.microsoft.com/l/chat/0/0?users=28:b8a22302e-9303-4e54-b348-343232
In the browser, paste this address and then choose the Microsoft Teams app (client or web) that you use to add the bot to Teams. You should be able to see the bot listed as a contact that you can send messages to and receives messages from in Microsoft Teams.
Alternately, In-order to test them in teams you need to take the app id from the Configuration page of the bot.
Once you search with the app ID in teams you would be able to see this bot as a contact in Microsoft Teams.
Refer:
Create a Teams app package and upload your app to the Teams client for testing. Learn how
Publish your bot as a Line of Business app in your organization's Teams Tenant App Catalog. Learn how
Publish your bot as an app in the Teams App store. Learn how
QUESTION
Introductory remarks
The purpose of this program is to rotate a mathematical plane around the x and z axes and to project this onto the 2D GUI. First about the sign convention: The plane lies in the xz-plane (so at the origin), where +x goes to the right, +y to the depth of the picture and +z to the top (compare: I look at another person as a person).
Many vectors are used to fill the surface. Depending on the size of the plane, there are often more than 40,000 vectors. So I decided to run the calculation function asynchronously. Since it is now cumbersome / nonsensical to paint in the PictureBox, I write in a bitmap, which I then assign to the PictureBox after each calculation process. Since the Graphics.DrawLine
function reached its limits in terms of performance, I integrated SkiaSharp
from Visual Studio's own Nuget package manager. Now, I write in an SKBtmap and can move the plane with the WASD keys and get a new image within a few hundred milliseconds.
For the projection, I use a formula that I found at StackOverflow a few months ago. I have now shown it clearly and distinctly. Since the plane partly comes towards me when turning, the distance to me changes. So, I subtract the distance_to_plane
to get the real distance.
ANSWER
Answered 2021-Sep-06 at 09:12If you'd like to apply perspective projection
to the points, the projected
point should be something like this;
QUESTION
I want to to show loading screen while loading json data or object, and start a new activity with all the json object I loaded.
My codes modal class
...ANSWER
Answered 2021-Jul-12 at 05:47Please call the start activity function inside on response function.
QUESTION
I am trying to write my own custom serialize and de-serialize for an object of my application. I know there are plenty of libraries like boost serialize etc. available for ready use but I wanted to learn this serialize and de-serialize hence this effort.
Problem occurs when I try to de-serialize(using std::wifstream) the object I had serialized(using std::wofstream). Not able to read even one class member correctly. First 3 members I am trying to de-serialize are bool, but they read incorrect values from the file stream. Can someone please suggest any pointers as to what could be the problem here. Thanks for your time.
Typedefs in application:
...ANSWER
Answered 2021-Jun-06 at 17:10I think I found the problem. The issue is, de-serialization using any std fstream when file is opened in binary mode CAN NOT be done using the extraction operator >>. Similar topic was discussed HERE. Please refer below code to see where the problem existed in the question code.
QUESTION
I am absolutely befuddled at the moment. Kind madams, good sirs; please do assist!
This is what I am doing:
I have a WinForms application connected to a SQL database with a varbinary(max) column for storing pictures. In my parent form (form1), I have a DataGridView (dgv1). Double-clicking on any row will bring up a new form (form2), where I can edit the row data, and where there's also a PictureBox (pb1).
If I add a picture, and then go back and refresh the DataGridView, and try to open the same row, it'll give me this error message:
If I go into the database and set the value of the varbinary(max) column back to NULL (from < Binary data >), and try to open the same row again, it'll work fine.
Let me show you my code:
...ANSWER
Answered 2021-May-20 at 17:53Well, first off imageData
is going to be an empty byte[]
because you're copying from the MemoryStream before you write the image data to the stream.
QUESTION
I have a form on VB.NET with which I manage data for a mysql database. The form, in addition to the various fields for entering data (textboxes + 1 datepicker), includes a "Save" button (which turns into "Update" when I press the "Edit" button), an "Edit" button, a "Delete" button and a DataGridView.
I have created a ShowData () to display the data in the DataGridView. This function works on the form load, it works also when I use the "Save" command (with the mysql Insert command) and the "Delete" command (with the mysql Delete command) but it seems to create problems when I use the "Update" command.
When I use the "Update" command the data is updated in the database but the "ShowData ()" function gives me the error You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 1 and, consequently, the data inside the DataGridView is not updated.
The "ShowData ()" function is also present on the "CellMouseDown" event of the DataGridView. The same error only shows up when I use the "Update" command first and then I move through the rows.
Public Class
...ANSWER
Answered 2021-May-04 at 19:58As the error message explains, this is a command syntax problem. In fact, I tried replacing this string in ShowData()
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