Graphs and waveforms.ppt
- 1. GRAPHS AND WAVE FORMS Dr.(Mrs.) Anjali Potnis NITTTR,Bhopal
- 2. SESSION OBJECTIVE Understanding the chart and graph . Generating and Plotting different waveforms. Analyzing the waveform . Print and Documentation
- 3. TYPES OF WAVEFORMS Waveform graphs and charts XY graphs Intensity graphs and charts Digital waveform graphs Windows 3D Graphs
- 4. Single and multiple trace Basic structures used for the plotting of data are arrys, Clusters and bundles .
- 5. DIFFERENCE BETWEEN GRAPHS AND CHARTS Charts:- Charts interactively plot data, appending new data to old so the current value can be append to the old in the context of previous data. Graphs:- Graphs plots pre- generated arrays of values without retaining previously generated data. In both the case data is acquired at a constant rate.
- 6. WAVEFORM CHARTS Waveform chart – special numeric indicator that can display a history of values Controls >> Graph Indicators >> Waveform Chart
- 7. GRAPHS Selected from the Graph palette of Controls menu Controls>>All Controls>>Graphs Waveform Graph – Plot an array of numbers against their indices Express XY Graph – Plot one array against another Digital Waveform Graph – Plot bits from binary data
- 8. EXAMPLE
- 9. WIRING DATA INTO CHARTS Single Plot Charts Multiplot Charts Functions >> Signal Manipulation >>Merge Signal
- 10. EXERCISE – USING WAVEFORM GRAPHS
- 11. WIRING DATA INTO CHARTS Single Plot Charts Multiplot Charts
- 12. WAVEFORM CHART It is a special numeric indicator that display one or more plots. Waveform chart types are as follows Strip chart Scope chart Sweep chart
- 13. WAVEFORM CHART USING WHILE LOOP
- 14. WAVEFORM GRAPHS Waveform Graphs and XY graphs are displayed data from an array . Build array function is used for the multiple data display.
- 15. Display of Single and Multiple plots on a Waveform Graphs Display of Single and Multiple plots on a Waveform Charts
- 16. CREATE A GRAPH USING FORMULA EDITOR
- 17. ARRAYS & FILE I/O Build arrays manually Have LabVIEW build arrays automatically Write to a spreadsheet file Read from a spreadsheet file
- 20. FILE I/O File I/O – passing data to and from files - Files can be binary, text, or spreadsheet - Write/Read LabVIEW Measurements file (*.lvm) Writing to LVM file Reading from LVM file
- 21. WRITE LABVIEW MEASUREMENT FILE Includes the open, write, close and error handling functions Handles formatting the string with either a tab or comma delimiter Merge Signals function is used to combine data into the dynamic data type
- 23. PRINTING & DOCUMENTATION Print From File Menu to Printer, HTML, Rich Text File Programmatically Print Graphs or Front Panel Images Document VIs in VI Properties » Documentation Dialog Add Comments Using Free Labels on Front Panel & Block Diagram
- 24. PRINTING File » Print… Gives Many Printing Options Choose to Print Icon, Front Panel, Block Diagram, VI Hierarchy, Included SubVIs, VI History Print Panel.vi (Programmatically Prints a Front Panel) Functions » All Functions » Application Control Generate & Print Reports (Functions » Output » Report)
- 25. DOCUMENTING VIS VI Properties » Documentation Provide a Description and Help Information for a VI VI Properties » Revision History Track Changes Between Versions of a VI Individual Controls » Description and Tip… Right Click to Provide Description and Tip Strip Use Labeling Tool to Document Front Panels & Block Diagrams
- 26. PRACTICE SESSION
- 31. DECIMAL TO BINARY CONVERSION