Cyfartaledd newidiol
Cyfartaledd newidiol ~ Moving average
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Rhedais i'r Daith Taf yn y bore, i Dongwynlais ac ychydig y tu hwnt. Roedd yn daith rownd 15C. Tynnais i ffotograffau ar y ffordd adre a phenderfynais i greu ffotograff 'cyfartal' o'r 16 delwedd*.
Mae y rhan fwyaf o'r daith yn wrth yr afon trwy'r cefn gwlad, ond un rhan o'r daith yn rhedeg wrth yr A470 ac mae'n swnllyd a llygredig. Roeddwn i eisiau rhedeg heb anadlu, ond doedd e ddim yn bosibl. Fydd i ddim yn rhedeg y ffordd honno eto.
Yn y prynhawn, aethon ni allan i Barc y Mynydd Bychan. Rhedodd Nor'dzin tra tynnais i ffotograffau. Ymunais i â hi ar y caffi am hufen iâ a diod. Roedd y parc yn fwy hyfryd na'r A470.
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I ran to the Taff Trail in the morning, to Tongwynlais and just beyond. It was a 15K round trip. I took photographs on the way home and decided to create an 'average' photograph of the 16 images *.
Most of the trail is by the river through the countryside, but one part of the route runs by the A470 and is noisy and polluted. I wanted to run without breathing, but it wasn't possible. I won't run that way again.
In the afternoon, we went out to Heath Park. Nor'dzin ran while I took photographs. I joined her at the café for ice cream and a drink. The park was more pleasant than the A470.
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*(Imagemagick: https://www.imagemagick.org/Usage/layers/
convert *.jpg -evaluate-sequence mean composite.jpg)
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