Expand the Display section (1) of the Properties panel and scroll as needed to expose its first few settings. Properties in this section control the rendering of the data at this node of the pipeline. In the Representation dropdown (2), select "Surface With Edges". Notice how the rendering view updates immediately to use your new setting. Changes made in the Display and View sections do not result in substantial computation, so the changes are committed right away. There is no need to click on the "Apply" button.

The "Coloring" dropdown (3) is set to "Solid Color" by default; this is why a single gray color is used to render the polygons of this data source. Expand the dropdown and notice the two additional values it contains. You've seen these before: in the Information panel, they were the additional data properties stored for each vertex of this data source. Select TCoords (texture coordinates) and see that the render view changes to display varying colors over the surface of the cylinder. These colors are taken from a blue-to-white-to-red color ramp that is mapped to the TCoords values.

The data source's TCoords data array contains 2D vector values for each vertex of the cylinder. But ParaView requires a scalar value for each vertex in order to apply a color "ramp". When "TCoords" was selected, the adjacent dropdown became enabled and took the value "Magnitude". This indicates that by default ParaView is calculating the magnitudes of the TCoords vectors and using them as the scalar values for the mapping to the color ramp.

Expand the dropdown to see that the X or Y elements from TCoords could also serve as scalar values for the color map. How does selecting these options alter the rendered image? If "Normals" is selected in the left dropdown, what color mappings are produced by choosing Magnitude, X and Y in the right dropdown?

The View section of the Properties panel (not shown) can also be used to modify the rendered image. These properties can toggle the display of axes and legends and alter the background color, camera properties and lights in the 3D scene. As with the Display properties, the View properties take effect immediately and do not enable the "Apply" button.