There are many question occurring on this forum regarding this issue, however the issue I am facing has not been answered in Generating DEM from contour Shapefile using QGIS?, which is that I have contour line data. Not point data.
Following the steps in Generating DEM from contour Shapefile using QGIS?. I have used SAGA Tool in the Processing Toolbox. Selected the Triangulation Tool from the Raster Creation Tools.
At this point It asks for the 'points' required for rasterising. But I want to input 'line data' does anyone know how to do this?
below shows the 'line data expressed in QGIS' 
the purpose behind this is due to the fact I need to create a 'height profile' using the Profile tool to create a cross section area from contours as seen in the example below.
I am using QGIS V 3.4
Answer
This can be done using the
MMQGIS plugin
Once added it will show up in the tool bar at the top of the screen. Select/highland the 'line.data' layer you want to convert to 'points.data'. click on MMQGIS and a drop down will appear. Then click on Modify and then Convert Geometry Type
Then a box appears as seen below -->
Change the 'New Geometry Type' to nodes from default 'line centers' and save the output file. Once ready click apply and this will change line data to point data
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