V. 19:2 (10-16): Letters To S&C

PHASOR DISPLAYS

Editor, I don’t like to be negative, but I must admit that John Ehlers’s article in the December 2000 S&C, “Phasor Displays,” as usual, frustrates me. On a scale of one to 10, I’d grade him, brilliance: 9, clarity of exposition: 1. For example, a small puzzlement: In Figure 7, in quadrant II there’s a note, “point 28.” Isn’t this point 23? There’s a point 28 near the top of the chart, in quadrant I. In quadrant I, there’s a note, “counter clockwise segment.” Isn’t the swing bar 21, 22, 23…41 a clockwise swing? It could have been helpful to include a chart showing typical trend modes and another showing typical cycle modes. Keep up the good work — the magazine is great. ART MERRILL Haverford, PA

Good to hear from you, Art, as always. Don’t be too hard on Ehlers; I mash up his input pretty good before it gets to you. You are correct about point 28 being point 23 (Figure 7); my mistake. However, you are wrong about the counterclockwise notation. There is an arrow pointing to the short segment that is going counterclockwise instead of clockwise. And thanks for the idea about having a chart showing typical trend modes and another with typical cycle modes; I’ll ask Ehlers to do something along this line. Isn’t the display spectacular!? —Editor