<div class="gmail_quote">On Fri, Feb 19, 2010 at 4:34 AM, Carsten Ehbrecht <span dir="ltr"><<a href="mailto:pingwin.newsgroup@gmx.org">pingwin.newsgroup@gmx.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Hi,<br>
<br>
i would like to use the vtkAxisActor2D with date/time labels. I haven't found out how i can set such labels. Is this possible with vtk?<br>
<br>
I'm using a 3D model with x,y-axis as geo-coordinates and z-axis as time. I would like to display the time range of z-axis with something like the vtkAxisActor2D.<br>
<br>
Cheers,<br>
Carsten<br><br></blockquote><div class="gmail_quote"><br></div><div class="gmail_quote">I've never used this class, but it looks to me like you specify two double values (the start and end value) and it interpolates doubles in between for the rest of the ticks. Hence, you could not make the labels something like "4:00am". You would have to subclass the vtkAxisActor2D. It looks like in the BuildAxis function, there is a section with a comment:</div>
<div class="gmail_quote"><br></div><div class="gmail_quote"> // Build the labels</div><div class="gmail_quote"><br></div><div class="gmail_quote">that does something like this:</div><div class="gmail_quote"><br></div><div class="gmail_quote">
val = this->AdjustedRange[0] + i * interval;</div><div class="gmail_quote">sprintf(string, this->LabelFormat, val);</div><div class="gmail_quote"><br></div><div class="gmail_quote">it is here that you could set the labels to a string of your choice.</div>
<div class="gmail_quote"><br></div>Good luck!<br><br>David</div>