How do I convert, let's say, a variable such as X from radians to degrees. I am designing weather forecasting software and cannot get it to work. proper syntax and much obliged.
View 9 RepliesConvert radians to degrees?
COS (X / 57.3)
Where X is your variable or constant.Your number is now in degrees.
After converting all degrees-->decimal, and decimal-->hours, how can i use Tan, Cos and Sin formula in vb.net? I want the user must enter an input (which it is a coordinat-->i already convert the degrees-->decimal value as suggested by stanav and paul.
The questions like this (i only calculate on paper but dont know how to implement in code):
Input user need to enter:
-latitude local (e.g. 1.4875)
-longitude local (e.g. 103.3883333)
[CODE]...
I am trying in my program to find the answer (in degrees from the following:Sin of 48 (in degrees) the answer should be 0.743144825 my code (getting wrong answer) is:
HTML lblSINDif.Text = Math.Sin(lblWindif.Text) * (180 / Math.PI)
I'm trying to wrap up a program I wrote in VB.NET and quick. I have a device that I am connected to through a serial port (COM4). It sent me 1056 binary bytes which I have stored in an array called newRecievedData. (see code below)
********** Start Code*********
Dim numberOfBytesToRead As Integer
numberOfBytesToRead = myComPort.BytesToRead
Dim newRecievedData(numberOfBytesToRead - 1) As Byte
[Code].....
I understand the concept of bytes and declaring variables to save on processing space. I understand that the max value that can be stored in a byte is 255. I cannot seem to wrap my head around my current issue. I don't have much experience working with byte manipulation.
[Code]...
I have in my My.Settings four settings [code] now I want to get the value of the current setting from the My.Settings.SettingName. [code]
View 1 RepliesIs there any available tool for converting variable and loops declarations from VB.NET to C++?
View 3 RepliesI'm doing lessons from a book on VB Express. My problem is a wierd key character.Dim db?Var As Double?= what looks like an "L" flipped 180 degrees. what is it?
View 4 RepliesAnyone knows (or has a function) to convert a latlong to degrees, min, sec?
example: 53.21884, 5.49217 > N 53 9 34.2, E 5 25 56.9
The reason why I want to do this is a little much to get into, but how can I rotate text by 90 degrees?
View 4 RepliesI want to rotate my progressbar 90 degrees.
View 6 RepliesI have a space ship, and am wanting to calculate how long it takes to turn 180 degrees. This is my current code to turn the ship: .msngFacingDegrees = .msngFacingDegrees + .ROTATION_RATE * TV.TimeElapsedMy current .ROTATION_RATE is 0.15, but it will change.I have tried:Math.Ceiling(.ROTATION_RATE * TV.TimeElapsed / 180)
View 1 RepliesI need to make two programs and i have a hard time doing them my first program is: Calculate the value between 0 & 180 degrees that makes the function sinx = x my second program is: calculate sinx with taylor formula, x=0 ill wait for answer
View 1 RepliesCalculate the value between 0 & 180 degrees that makes the function sinx=x
View 6 RepliesFirst of all I got app to convert Degrees, Minutes and Seconds to decimal. But now I need to get Decimal back to Degrees, Minutes and Seconds and I can't get it how to make it because I'm terrible with math formulas... Here is what I done so far:
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
TextBox4.Text = TextBox1.Text + (TextBox2.Text * 1 / 60) + (TextBox3.Text * 1 / 60 * 1 / 60)
End Sub
End Class
Textbox1 - Degrees
Textbox2 - Minutes
Textbox3 - Seconds
Textbox4 - DECIMAL RESULT
How do I get the degrees sign for temperature in vs2008?[code]...
View 2 RepliesHow can I angle an ellipse by 7 degrees? My intentions are to angle the ellipse so the left side is up and the bottom right is down. [code]
View 1 RepliesI dont even know if you can do this in vb.net but, how do you change the pictureboxes x2 y2 to tilt some degrees other than 90 degree angles?
View 2 RepliesI'm having a weird behaviour with a left-aligned TabControl in VB.NET. Screenshot:
What I wanted was to have the tabs literally the same way they would be if rotated 90 degrees to the left. Does it have something to do with the fact I'm not (god forbid) using the standard XP theme? Any solution to just make it work? (Even if it's hard, but I don't want a control that has a contrasting style, I want the program looking consistent)
How can i draw text(demo demo) with 180 degrees format on exist image(on photo) in windows based applicaiton using vb.net. (Here rotate text(demo demo is displaying text on exist image) with 180 degrees formate then display on exist image)
View 11 RepliesIs there code to rotate a picturebox a certain amount of degrees when a button is pressed?
View 4 RepliesCreate a function named DecimalDegrees to refactor the code that converts a latitude or longitude into a value in decimal degrees. (This function will be used inside the functions ValueOf and Distance.)
Task 2a: Write the code for the function DecimalDegrees with an input parameter for DegreeString as type string, and returns the value as type Double.
Here is my code for the function part
Private Function DecimalDegrees(ByVal DegreeString As String, ByVal degrees As Double, ByVal minutes As Double,
ByVal seconds As Double, ByVal ID As Integer) As Double
I am having difficulties with the 2nd part which is I believe to take the code for the calc1 and calc2 buttons and somehow get it to convert to decimal degrees by the function I have created. The buttons would then be removed as the code would automatically take the latitude and longitude and convert the degrees, minutes and seconds into a decimal.
Here is the code for the current buttons:
Dim StartPtr, StopPtr As Integer
'To Replace Calculator 1 Button
'Convert degrees before passing argument - Latitude
StartPtr = 0
[Code] .....
my goal is to
1.Take an file(exe,dll,etc)
2.Convert it into hex
3.place that hex values in a stack
4.Execute the values inside the stack to its original form(i.e. take the elements out of stack and then convert it to a compile format)
Imports System.IO
Sub Main()
Dim fileName As String = "ABC.exe"
[code]....
I am trying to integrate iTextSharp into an existing Document Imaging application that allows users to rotate individual pages that may have been scanned in at an incorrect angle (it happens more often than I would have thought).
[Code]...
I am getting the error:"Range variable 'sender' hides a variable in an enclosing block or a range variable previously defined in the query expression."for this
Imports System.Data.SqlClient
Imports System.Linq
Public Class Form1
[code]....
I can select any other item from the table without the error. "sender" has the same properties as "receiver" in the SQL table.
I receive the error -
[Code]...
Public Class Form1
Dim x, c, number(0 To 19) As Integer
Dim s As Integer
[CODE]...
The variables in the brackets [example] do not actually have brackets in them in the original code. These are where the issues are. For both variables, it says, "The type for variable [variable] will not be inferred because it is bound to a field in an enclosing scope. Either change the name of [variable], or use the fully qualified name (for example, 'Me.[variable]' or 'MyBase.[variable]')." Now, I'm not entirely sure if this is a stupid question or not, as I'm used to VB '98 because that's what we use in my programming class at High School. let me know why this won't work.
-Note: The intention of this program is to continually loop the generation of numbers for this list until I tell it to stop. Button1 ends the program, Button2 generates the list one time only, Button3 is supposed to loop the generation of the list, and Button4 is supposed to end the loop, but not the program.
Say that i have the following code that parse about 20k records from the DB.
Code #1
vb.net While reader.Read()
list.Add(If(Integer.TryParse(reader(0).ToString, 0), Integer.Parse(reader(0).ToString), 0))
End While
And then another code which does the very same thing but it seems to be a little cleaner.
Code #2
vb.net While reader.Read()
Dim storeowner As Integer = 0
Integer.TryParse(reader(0).ToString, storeowner)
list.Add(storeowner)
End While
This is what i am confused about; does the compiler creates a new variable automatically when i use the if statement without strictly declared variable? What approach is better in sense of performance?
I am looking for a good resource on variable naming conventions to illustrate variable type and where variables are declared. So I will have public variables, Private variables, private or local variables. I also may want to declare variables with the same name in different class code (i.e. in the code behind different forms). I am assuming good coding would dicatate a prefix for declaration location.
View 4 Replies