Copy edited. Fixed the question formation - missing auxiliary (or helping) verb - see e.g. <https://www.youtube.com/watch?v=t4yWEt0OSpg&t=1m49s> (see also <https://www.youtube.com/watch?v=kS5NfSzXfrI> (QUASM)).

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Why theis there a white vertical line on this DensityPlot?

I'm trying to convert all of my old Mathematica 7.0 codes to Mathematica 13.2, and I'm experiencing some unexpected issues. The following simple code draws a grayscale graphics:

intensity[x_] = (Sin[Pi x/8]/(2 Pi x/10) Cos[Pi x/5 + Pi/3])^2; graphic = DensityPlot[ intensity[x], {x, -3, 3}, {y, -1, 1}, ColorFunction -> GrayLevel, PlotPoints -> {1000, 3} ]; Show[graphic]

Preview of what this code is doing:

The issue is the pesky white vertical line in the middle. How tocan I get rid of it? Why is this simple code doing that, with Mathematica 13.2? I never had this, with version 7.0.

Why the white vertical line on this DensityPlot?

I'm trying to convert all of my old Mathematica 7.0 codes to Mathematica 13.2, and I'm experiencing some unexpected issues. The following simple code draws a grayscale graphics:

intensity[x_] = (Sin[Pi x/8]/(2 Pi x/10) Cos[Pi x/5 + Pi/3])^2; graphic = DensityPlot[ intensity[x], {x, -3, 3}, {y, -1, 1}, ColorFunction -> GrayLevel, PlotPoints -> {1000, 3} ]; Show[graphic]

Preview of what this code is doing:

The issue is the pesky white vertical line in the middle. How to get rid of it? Why is this simple code doing that, with Mathematica 13.2? I never had this, with version 7.0.

Why is there a white vertical line on this DensityPlot?

I'm trying to convert all of my old Mathematica 7.0 codes to Mathematica 13.2, and I'm experiencing some unexpected issues. The following simple code draws a grayscale graphics:

intensity[x_] = (Sin[Pi x/8]/(2 Pi x/10) Cos[Pi x/5 + Pi/3])^2; graphic = DensityPlot[ intensity[x], {x, -3, 3}, {y, -1, 1}, ColorFunction -> GrayLevel, PlotPoints -> {1000, 3} ]; Show[graphic]

Preview of what this code is doing:

The issue is the pesky white vertical line in the middle. How can I get rid of it? Why is this simple code doing that, with Mathematica 13.2? I never had this, with version 7.0.