Since a couple of days, my german permaculture blog is now available in English as well – www.living-permaculture.com. Check it out, enjoy, and leave your comments if you like. I’ll post something in general every two days on the wide range of interesting subjects of permaculture, such as agriculture, urban agriculture, ecovillages, living together, smart low-cost technologies, presentations etc.
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One giant container ship pollutes the air as much as 50 million cars. Yes, that’s 50 million. Which means that just 15 ships that size emit as much as today’s entire global “car park” of roughly 750 million vehicles. Among the bad stuff: Sulfur, soot, and other particulate matter that embeds itself in human lungs to cause a variety of cardiopulmonary illnesses.
But ships today are where cars were in 1965: utterly uncontrolled, free to emit whatever they like. Just one of many statistics: A car driven 9,000 miles a year emits 3.5 ounces of sulfur oxides–while the engine in a large cargo ship produces 5,500 tons.
The world’s biggest container ships have 109,000 horsepower engines which weigh 2,300 tons.
Each ship expects to operate 24hrs a day for about 280 days a year
There are 90,000 ocean-going cargo ships
Shipping is responsible for 18-30% of all the world’s nitrogen oxide (NOx) pollution and 9% of the global sulphur oxide (SOx) pollution.
One large ship can generate about 5,000 tonnes of sulphur oxide (SOx) pollution in a year
70% of all ship emissions are within 400km of land.
85% of all ship pollution is in the northern hemisphere.
Shipping is responsible for 3.5% to 4% of all climate change emissions
Voici les commandes un fois que tu as convertis ton image en grid. La commande 2) sert à convertir les nodata en valeur (en ce cas 255) car le tif ne le gère pas.
2) tmpgrid = con(isnull(ingrid), 255, ingrid)
4) gridimage tmpgrid colmap outgrid tiff lzw
5) kill tmpgrid all
en Gras les paramètres à inserer (tmpgrid tu peut le laisser comme ça)
1 255 251 197
2 255 243 148
3 255 227 99
4 255 202 49
5 255 174 0
6 239 134 0
7 214 97 0
8 197 65 0
9 173 36 0
10 148 16 0
11 132 0 0
12 107 0 0
13 90 0 0
14 74 0 0
15 49 0 0
Symbolizing using graduated colors or graduated symbols in ArcMap returns the following error:
“Maximum sample size reached. Not all records are being used. Use this sample or change maximum sample size.”
The sample size for the data exceeds the maximum sample size specified in the Symbology tab.
Solution or Workaround
Right-click the layer in the table of contents and click Properties.
Click the Symbology tab and click Quantities in the Show box.
Symbolize the data with graduated colors or graduated symbols.
Click the Classify button to display the Classification dialog box.
Click the Sampling button.
Set the maximum sample size to any number greater than or equal to the amount of features in the layer.