CS320n –Visual Programming Clusters and Images

What We Will Do Today Look at clusters in LabVIEW and start working with images Visual Programming Clusters and Images

Clusters Arrays are used to hold many elements that are of the same data type A cluster is used to hold together data of different types normally fewer elements than an array but some of the elements may be arrays themselves Visual Programming Clusters and Images

Cluster Example Take a name and an age and put them together Name = string Age = int The “Bundle” function is used to group together different elements into a cluster number of input can vary drag down on button of function to add more inputs Visual Programming Clusters and Images

Creating a Cluster Bundle Function Clusters can be used to reduce the number of wires in a diagram. Like a high level view of data. Analogous to high level methods / functions in Alice. Visual Programming Clusters and Images

Opening Images in LabVIEW LabView provides a way to open image files jpg, png, and bmp are image types different ways of saving an image on a computer Specify location of image with a path control Visual Programming Clusters and Images

Picture functions To open a picture in LabVIEW use a path control and wire to a Read JPEG File function Note the output on the Read JPEG File function Visual Programming Clusters and Images

Image is a Cluster Lots of Data! indicates arrays Visual Programming Clusters and Images

Looking at the Raw Image Data Use an Unbundle function and an array indicator in the image cluster right click on image output and select create -> indicator Unbundle Right click on this output terminal Visual Programming Clusters and Images

Class work Link on the class web page to an image of the UT tower how many pixels in the picture? (Find answer using LabVIEW, not some other graphics program) Visual Programming Clusters and Images