Draw 2 lines in a graph

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• Draw the new lines on the graph of the intensity

  I'm trying to attract the XY axes by an arbitrary point on a graph of intensity. I can draw two lines across the image (suite of messages like this link below), but they don't really seem FDNE to the top one the coordinates I spesify. I know that I have to correct the fact that the vertical scale increases from top to bottom, but how do I draw lines to the (x 0, y0) position I spesify? It seems that the lines are superimposed on the image, but not related to the axes of the actual intensity chart.

  http://forums.NI.com/T5/LabVIEW/overlaying-XY-line-onto-intensity-graph/TD-p/398963

  

  but you need made "vertical mirror".

• draw lines on the graph of the intensity

  I want to draw lines on the graph of the intensity.

  I am already looking for some questions before.

  I know there is a vi could draw line on the graph of the intensity by dragging the mouse.

  But I need more precisely what set the length and the angle between the horzontal line.

  The setting is very ideal for me. But I don't know how to use it in the intensity chart.

  Is there anyone can help or give some advice?

  Your example is not so great because it uses 100% of CPU on a kernel at any time, do nothing.

  Here's a quick rewrite of my old example here. He draws an angle with the specified length and angle to where you click on the chart. This should help you get started. Modify if needed. (Also remember that trigonometry is much easier when using complex numbers )

• Draw a line connecting two points in the WPF chart

  I'm trying to understand the best way to draw a line between two existing points on my graph in WPF.  At first, I thought I had it works fine; I just added another parcel to my graph then given exactly two points for rendering.  But I quickly noticed that the app has become surprisingly slow and CPU was quite high (adding other plots does not affect the use of the CPU as long as they have a complete set of points (?)).  He wants me if I looked at using the DataToScreen method on the chart but I can't know what the parameters are.  The second parameter is simply an IList that tells me a lot.  This seems to be the method I want to use for the coordinates of a point on the graph screen.

  No one knows what the second parameter is supposed to be for the DataToScreen method?  Everything I tried throws an Exception of Argument.

  Thank you
  Dan

  DataToScreenwill return a screen coordinate in the plot area of a chart of the value of the raw data horizontal and vertical in the given list. The parameter value is a IList for compatibility with other methods of graphical query such as FindNearestValue , return IList values containing raw data.

  A concrete example, say you had a graphical configuration with a wide horizontal axis ranging from 0 to 100 and a vertical axis double precision ranging from 10 to 20:

  
          
              
              
          
      

  To get the screen coordinates of the value at the center of the two axes, you can call:

  graph.DataToScreen(plot, new object[] { 50, 15.0 })

  Note that the raw data values corresponding to the type of axes (horizontal AxisInt32 returns the integer 50 and vertical AxisDouble Gets the value 15.0 ).

  You also mentioned a performance issue where "adding other plots does not affect the CPU so that they have a complete set of points". I did a simple test app that adds an array of two points of a chart on each key (for example graph.Data.Add(new[] { new Point(x1, y1), new Point(x2, y2) }); ), but could not reproduce the problem you saw. Could you share the code, you use to draw the connection line?

• Create horizontal lines on a graph

  I'm looking to create horizontal lines on my paintings of waveform. I know that I can't use the cursors on a chart, but I want to find a way to draw lines on the y-axis of a graph (chart) of a control on my front. The reason is: I am in a position a sinusoidal signal that changes in amplitude due to the deformation of a material. I need to adjust the length of these horizontal lines using as reference.

  I understand that I could use the limits of the curve because of it, but then I wouldn't be able to tell how long out of bounds, I. I am a super novice to Labview and you guys have been such a great help with all my endeavorsso far. Any suggestions?

  Draw several lines in the table, where two of the parcels are borders. I don't remember the exact requirements, but you can probably do it by grouping the values or the construction of a table. Check the contextual help and the examples in the table.

• How to draw a line on a pic

  CCan I draw a line on a photo in the photo app. ??

  No, but there are many annotation applications in the App Store. To start try Skitch.

  Almost all drawing applications allow you to set photos, then draw over them, too.

• Draw a rectangle in a graph

  Hi, I want to programmatically draw a rectangle on a chart XY (XY Graph.vi Build). I know where the 4 points are on the coordinate chart but I can't yet draw using the block Rectangle to draw. Could you please help me how can I draw a rectangle in a graph. I am attaching the photo to this message

  Hi guys,.

  I thought it was interesting questions - and, although I had not tried anything quite like this before, I thought I would give it a whirl. smercurio_fcsuggestion was excellent - I find the code referenced in LV example finder, in the fundermentals > graphics & graphics > plot pictures folder.

  Attached are 2 pieces of code.

  DrawRectangle on Graph.vi allows users to define the rectangle by cluster of façade.

  

  DrawRectangle on graphic .vi (events) allows the user to define the rectangle by clicking and dragging on the chart. Please note that the code requires that you start from the upper left corner of the rectangle, and drag to the lower right. But isn't that a creative logic would not solve - if you wanted a bit more flexible code.

  

  You should also know that I have not spent a lot of time on the code, so it is not perfectly architected. But we need to think!

  Best wishes

• Using custom control: draw a line and output start and end points

  I'm looking to find or make a custom control (or simple Subvi), which appears as a grid of 100 x 100 unit and allow me to draw a line from one point to another on this grid. It will then display (x, y) of departure and the point of this line on the grid.  Any help or ideas?

  Thank you

  Steve

  LabVIEW 2009 SP1

  You want essentially is a loop with an event structure when you process mouse down, move and up to events for the controls. There are several ways to implement something like that, but it will be probably the simplest:

  1. Use a table or a listbox multicolumn for your grid. Hide scrollbars and headers.
  2. You can use the ActiveCell property to-2, - 2 to select all cells. You can then use the cell size property to define the exact size of the cell.
  3. Then you put a picture on the top of the table control and color its transparent background so that the table shows through. Property node allows you to ensure that both line up on exactly the same location and size.
  4. You use the mouse on the image control events to detect clicks and moves.
  5. Point of the table to the method of the column line allows you to translate the position data of the event to a cell.
  6. You use the image control screws to draw the line on the photo based on these data.
  7. You can even color the cells selected in the table by using the table properties.

  If you want to simplify things a bit, you can also use the event of timeout instead of moving the mouse event to draw the line, but then you keep the timeout value in a shift register and hand it to-1 (no timeout) when the mouse event to the top.

  I would also say treatment mouse enter and leave events to change the cursor and cancellation if the user leaves in the middle of drag.

• How to draw the lines automatically

  In LabVIEW I must draw a line automatically (both vertically and horizontally) the user will define the vertical and horizontal number lines.

  Is this possible with LabVIEW

  Thanks in advance

  You move to the point of departure of the line using "move the pen", and then draw the line using "draw the line".

  Repeat for each line. (using for example a for loop and autoindexing on positions).

• Draw text on the XY graph

  Hello

  There is a technique to draw a text note on graph XY.

  For example the text "AAAAAA" put near the upper left of the XY graph.

  Thank you.

  Previous version is wrong: this only works if an annotation already exists on the chart.

  If no annotation it does not work.

  Here is the solution for the empty graph:

  

• I want to draw a line between 2 specific points on an image inserted in a Panel? Help, please!

  I am a beginner in working with LabWindows/CVI and I want to draw a line between 2 specific points on an image inserted in a Panel? Please help or examples of code.

  As evidenced by the Wolfgang there is a problem in the definition of recall. InstallCtrlCallback wants a reminder of the standard of review as a parameter: apparently you have structured your reminder callbackName on the prototype of a recall of Panel, which obviously missing the setting "control".

  In addition, the recall of control should be said somewhere before it can be used. In other words, you must add his statement before your function {main}, either in one of your include files, or directly in the code. This is the reason for the error 'found int, whereas CtrlCallbackPtr. '

  Third point: you create a new picture control in the callback assigned to the image control. And you reuse variable 'Test', which already holds a valid control ID...

  Finally: what you expect to make from '1' in callbackData parameter, given that you do not use anyway? Unless you want to adapt the behavior of recall some past in callbackData conditions, you must pass NULL as the parameter.

• Draw the line below each item ListField

  Hi all

  I want to make a ListField similair to the contacts application. Under each ListField article a horizontal line is drawn as a separator. Somehow, I can't draw a line under each article. It works if I put the line above each item, but this means that the last element does not.

  That's what I'm doing now:

  public void drawListRow(ListField listField, Graphics graphics, int index, int y, int width) { // Draw a line separator above each field except the first one    if (index != 0) {     graphics.setColor(Color.LIGHTGREY);       graphics.drawLine(0, y, width, y);    }}
  

  Thanks in advance

  When you draw the line, you need to add the () listField.getRowHeight for the parameter y and subtract 1, IE

  graphics.setColor(Color.LIGHTGREY);
  int yPos = y + listField.getRowHeight() - 1;
  graphics.drawLine(0, yPos, width, yPos);
  

• Need to draw the line & bargraph on Blackberry using JDE 4.7

  Hello

  I need to draw a line and a graphic barcode using JDE 4.7.

  can someone help me find the starting point.

  Thanks in advance.

  The forum search will often provide an answer.

  http://supportforums.BlackBerry.com/T5/Java-development/how-implements-a-chart-on-BlackBerry/m-p/465...

• Draw the line width problem

  Hello

  1. work on the version of BB storm (9500/9530 Simulator) is v4.7.0.75
  2 opportunity BB JDE 4.7
  3. the request is:

  I want to draw a line with my own thickness as in 'C' we have a setPenStyle method. is there a method that will do the operation similar to the blackberry.

  Thank you

  Sendhil Kumar V

  Try this forum,

  http://supportforums.BlackBerry.com/Rim/Board/message?board.ID=java_dev&thread.ID=19608&view=by_date...

  See if it helps,

  Try drawFilledPath(),

• Draw straight lines with Photoshop and the Wacom Tablet pen?

  Hello
  I was just wondering how to draw straight lines using pen Wacom Intuos and Photoshop. I was hoping there was an a little sovereign tool or something that will help you with it but can not understand. Thank you ahead for your help with this.

  Same as with a mouse. Click once on one end of the line the shift click on the other end of the line.