catenary lines on a picture


I'm currently drawing straight lines between 2 selected controls on my PC, with a width of 5 pixels and shadow... so they resemble threads.

I prefer to join these points by a line which has a few "droop"... similar to the effect gravity.

Y at - it all blocks to calculate parabolic paths between 2 points? Or if someone has used a curve type block to do?

Or better yet, a path of overhead lines (such as the hyperbolic cosine)... so that they have a true path of gravity dependent.

Points can be anywhere on the front... not only on the same axis.

Thanks for your suggestions.


Once the adjustment is done, the parameters are passed to a call by reference node that is connected to a reference of the VI that allows to calculate the catenary curve (even than the one used for the adjustment).  Points x are generated by the VI ramp with start and stop of the values determined by the maximum and the minimum of the clicked points.  In this way, you get a smooth curve even with three data points.  This curve is then sent to the XY graph that is updated in the case of the structure of the event time-out.

Tags: NI Software

Similar Questions

  • My lightroom catalog 5 contains red lines on my pictures

    Hi, I've been using lightroom 5 for some time now on my mac OS, with very few problems. At the opening of my catalog today I discovered red lines on my pictures that were not already there before, and I don't know how it happened, and even less how to get rid of them. I have read several forums of a similar error to do with photoshop cs5, these seem to suggest an error with the graphics card on the computer. Anyone who has had the same or similar question in the past and knows how to solve this problem? Thanks, Alex

    For reference, the version of lightroom is 5.7.1.

    These 'red lines' are highlights which are cut, and Red that you see is the highlight clipping indicator. You can adjust the highlights to get rid of this Division. Clipping means that these areas are so bright that detail is lost. If you don't want to see the highlight clipping indicator, you can click on the small square at the top right of the histogram. If you ever see blue 'lines' those are indicating that it is a break in the shade, which means shadow detail is lost. Culmination of shadow clipping led can be turned on / clicking on the small square in the upper left corner of the histogram. Personally, I usually leave these active indicators to help identify areas that need to be adjusted in my images.

  • Dotted line around the picture frame in the mode of statement of assets.

    In my state the active, I have the button set to open in a new window once above, on which it does. But when I go back to the page, there is a dotted line around the picture frame that doesn't go away. Any help would be greatly appreciated!

    dotted line.png


    I believe that you use Firefox to view the site, as this happens only on firefox.

    This is a known problem on their end the selection to the item page remains when we go back to the page.

    Details can be found on this link:

    where it is mentioned that they would be taking off this Firefox 29 go.

    Muse we cannot control this, because it is a specific selection of the browser function.

    Thank you


  • draw the line in graph (picture) xy

    Hi all

    I place an image in xy graph that I allow to annotate some of the indicators.

    After I put the flag in a place in xy graph (picture) I want to draw lines between indicators.

    can someone help me with this? I'm using LABVIEW 8.2.1

    Sorry for my English.

    Take a look at my example of the past.

    Here; rapid s and diry draft amendment to your VI, see if it works for you. (the lines are drawn between annotations when you press OK).

  • When to add several new lines to a picture - is there a 'best practice' to use here?

    I need a picture of evolution.  It won't change much, but it must be done.

    In MatLab, I would write:

    Now I expect it's pretty.  I know that I could wrap it in MathScript if I wanted a 1000 x hit in performance (link), so I try to avoid this.

    If I had to do the following in LabVIEW, would he bomb somehow that my intuition MatLab does not inform?  Is there a more preferred way to do?

    Note: the entries are the same between the VI and the MatLab script.

    I would just subtract the number of rows in the table to initialize and index with this number of lines unlike wanted.  Use the number of columns for the second dimension.  Then build table and replace table subset.

  • on my removable drive e. the pictures on my media card all have lines through the pictures, I never understand was wrong before, I use windows 7 on my laptop nephews

    all images of this disc player seem to have several lines through them... even if they appear very well during the Preview on the camera with that I took photos!  HELP PLEASE!

    This happens on all computers or only this one. It seems that one of two things happening. Either these pictures has not registered properly, or there is a problem with the format in which they were saved and Windows has trouble reading.

    You have another SD card, you can try with device photo/computer?

  • How can I get rid of a vertical line on my picture?

    I'm using photoshop elements for mac 11 and have a small vertical line on a face to people on my edited picture. I tried painting and stamping on it, but it seems that nothing will work. Do you know how to get rid of it? This is what it looks like:

    Screen Shot 2014-01-12 at 16.55.02.png

    If this line is limited to the face, take another picture, and then copy and paste the new over the old.

  • Lightroom prints vertical lines on my pictures

    When I print a photo from Lightroom, it has vertical lines about 8 millimeters throughout the picture.  Very fine they´re.  In fact when I look at close-up, it seems that it s print vertical of 8mm strips and each band is perhaps one pixel above or below the band beside her.

    However, if I use another program photo prints perfectly.

    I ve tried several settings in Lightroom, but I can´t get that this corrected.  Someone at - it ideas?

    Lightroom is to update v4.4.  Mac OS x 10.7.  Canon MG5400 printer.  I ve installed the last printer driver (if it s only Lightroom who has this problem so I Don t think he can be the drivers).

    Thank you

    Nice day!

    Feel free to post on the Forum with Lightroom.

    Kind regards


  • What are these horizontal lines on my pictures?

    Hi people,

    I just got myself a new computer which is stronger and I just finished moving all the old files on your old computer to the new.

    I opened Adobe Preimere Pro and found that some of my pictures have these horizontal lines on them (see photo).

    Everything is fine but when the time bar goes to the images, everything's in black only.

    How can I fix? What is the problem?

    Thank you!


    In fact, these diagonal lines indicate that the source of the layer footage is shorter than indicated in the timeline panel.

    This happens usually if you placed footage in the timeline and the subsequeently Cup for example with an external editor, AE and re-imported the shorter material under the same name.

    To lose the diagonal lines, went to slide the end of the placeholder timeline left (for garnish) until they are.  .

  • Lines in imported pictures

    When I import images using the card reader SD Apple in Photos on my iPad, I get a series of lines on one edge of each image.  The lines are not on the original and do not appear if I import the images in the Photos on my iPhone using the same SD card reader.  Any ideas as to what is happening and how to fix it?

    I'm having the same problem. This happens on iPhone, iPad 2, iPad Mini.

    I tried different SD cards, I tried different cameras, it's always the same.

  • Lines on my pictures

    I am traveling in Europe with two cameras and my Ipad. Has decided to take the IPad instead of my MacBook Pro. All the photos - two cameras - see the black lines about a 1/8 of the way on the right side of each image. I have two different connectors, used two cameras and different memory cards. It must be the Photo software. I have the current IOS. Fortunately, I have not removed hundreds of images from memory cards and download them to my desk top when I get home, but all the images on my IPad are unusable. Anyone has this problem and a solution?

    I assume that the lines are not there when you look at other materials. THA eliminates the ipad hardware problem.

    Since the two separate cameras with the same problem, it is unlikely that both would fail at the same time, with the same problem.

    The question, therefore, can be either software, or a piece of hardware that is common to the two cameras.

    Standard to solve software problems are reset and restore.

    Reset: hold the Home and Power buttons until you see the Apple logo (15 to 20 seconds).


    If no change, I'd take the evaluation from the nearest Apple Store system.

  • Gray lines through the pictures


    I recently downloaded the photos from my iphone, and on them the Photos app preview, they showed with gray lines in the Center with a mini-apercu of the photo.  This happened only in the first installment of 100 or more, and the rest of the photos are normal.

    Someone else has come across this or know how to fix this problem?

    Export the unmodified original

    a couple of these problem photos on the desktop and open them with preview.  Check if the gray lines are there or not.

  • How to enter lines in the picture

    A friendly person can give me an idea on how to get the white samplelines.jpg curves the lines in the image gradient.


    Perfect, if I see you in a water hole I'll scream for you.

  • Lines covering the picture in monitors


    I've recently updated for first CC and I am facing a problem I've ever had to deal with before. I'm editing images of 5 d mark II and I'm unable to see the image correctly on the screen when it does not move as lines cover the monitors (see image below). the image appeared as soon as the video plays.

    Does anyone know where the problem could come from?

    Thank you very much

    Capture d’écran 2016-05-10 à 18.34.07.png

    Go to file > project settings > General and set the software-only rendering engine, that help?

    Display the specifications of your computer, please.


  • How can I remove lines in my picture?

    I remember seeing an easy way to remove wrinkles as power lines of an image, but I don't remember how to do it. Can someone tell me please?

    Try the disappearance of lines with Photoshop CC - YouTube

Maybe you are looking for