Read wind-direction diagrams in ManYue: separate meteorological origin from travel arrows

A rightward comic arrow is not automatically an easterly wind. Meteorological direction generally names where wind comes from, while a motion arrow may show where air goes. Read original plan diagrams and a symbol card in ManYue, establishing orientation before pairing origin and destination. This provides no live weather or navigation advice and claims no wind-measurement feature.

Fix north and the arrow legend

A is an original plan grid with north up, east right, west left and south down. Its central left-to-right arrow explicitly shows air movement. B uses the same orientation with meteorological direction words. Record file, location, north and arrow meaning, not merely screen-right. Flags, vanes and hair are different objects, not universally equivalent arrows. Without north, left/right observations do not establish compass directions.

Derive the meteorological name from travel

A moves west to east, so its meteorological name is a westerly, not an easterly because the arrow points east. North-to-south motion is northerly; east-to-west is easterly. Write origin and destination before the name rather than switch meanings of a lone compass word. This assumes horizontal plan view and conventional source-based naming. Preserve and explain any explicit alternative convention in the work instead of silently replacing its symbols with forecast standards.

Check the half-turn relation with bearings

The card uses north-source three hundred sixty degrees, east ninety, south one hundred eighty and west two hundred seventy, clockwise from true north. Northerly flow travels at one hundred eighty; easterly at two hundred seventy; westerly at ninety. Origin and destination differ by a half-turn modulo three hundred sixty; west-source two hundred seventy plus one hundred eighty must wrap from four hundred fifty to ninety. Separate both bearings and do not mix this convention with mathematical east-origin counterclockwise angles.

Pair northeast origin with southwest travel

A northeasterly comes from between north and east, ideally forty-five degrees, and travels southwest at two hundred twenty-five. The name does not imply two separate winds from north and east, and diagonal length supplies no speed without scale. An eight-point label does not establish instrument precision to two decimal places; forty-five is the ideal centre here. Variability and gusts require time data: one static arrow establishes neither all-day direction nor rainfall from origin alone.

Distinguish a station wind shaft from a motion arrow

A station wind shaft points toward the direction from which wind comes, so it is not an ordinary air-travel arrow. Barbs can encode speed and differ from an arrowhead. The main sample uses explicit travel arrows; the station symbol is a convention comparison, not a complete speed-barb lesson. A vane requires its own object convention, while cloth often extends downwind under local conditions. Give each diagram its own legend instead of transferring A’s reading to every symbol or treating decorative arrows as standard observations. For the station-shaft convention see NOAA’s surface-plot key.

Track north when the page rotates

Rotate all of A ninety degrees into C, carrying north, grid and arrow together. The geographic name remains westerly even though the arrow no longer points screen-right. Separate screen and geographic direction: device rotation does not rotate real wind. A cropped rotation missing north is insufficient evidence; restore the whole diagram. Zoom assists legibility, not pixel-angle measurement of an allegedly scaled source. This tests orientation relations without field observation.

Check reversed directions and zero encoding

If A becomes easterly, trace its west origin. If northeast origin becomes southwest, check whether destination entered the source column. Some meteorological encoding uses zero for calm and three hundred sixty for north: consult the actual format rather than convert every zero to north or an absent arrow to absolutely still air. Unknown speed stays unknown; length alone is not measured strength. Share original diagrams and conventions, not a substitute for current weather. Real interpretation requires source, place and time absent from this exercise.

Reopen and deliver paired direction records

Reopen A, B, C and the bearing card, checking north, legends and identity. Reconstruct westerly-to-east, northerly-to-south and northeasterly-to-southwest. Retain source name, source bearing, destination and rotation conditions, with station-shaft conventions checked separately. Explain why screen-right alone cannot mean easterly and why static symbols do not establish all-day speed or weather. Reassess changed diagrams, symbols or bearing conventions; bookmark return is not wind detection. Results cover reproducible reading of the original paper diagrams only.

Related guides and sources

ManYue maps inside comics: read the legend before checking a route; Read latitude–longitude grids in ManYue: angular coordinates are not map kilometres.

Checked on November 14, 2026: Apple public information lists ManYue 2.0.5, requiring iOS / iPadOS 15.0 or later. See the official App Store for published capabilities; verify specific controls in the installed version.

Method reference: NOAA National Weather Service: wind-direction definition. Samples, passages and controls are original exercises. Sources establish definitions and checking methods rather than new automatic analysis in the app. Manual records may be kept externally, and unknown fields should remain explicit. This article does not claim step-by-step testing on a physical device, private server or every output environment.