dhow_76.jpg

https://legacy.lib.utexas.edu/maps/islands_oceans_poles/dhow_76.jpg
#1593: Successfully georeferenced
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Georeferencing Error

Mean Absolute Error Root Mean Square Error Maximum Error
2.5%
2.5%
5.5%
15.502 pixels 18.352 pixels 34.247 pixels
104.542 km 122.217 km 237.869 km

🡇 Parameters

Estimated Transform

Type: Polynomial (2nd order)
Coefficients:
Long = 0.000x2 0.000xy 0.000y2 +0.059x +0.018y +28.686
Lat = +0.000x2 +0.000xy +0.000y2 -0.012x -0.068y +37.904

Control Points

🡇 CSV 🡇 GeoJSON

ID Name Longitude Latitude Source Residual (km)
113315 Tanga 36.05 -9.016667 Auto 237.869 3.7%
113313 Lamu 40.8640335 -2.2846737 Auto 230.949 4.9%
113286 Iran 51.0292 32.0913 Auto 184.248 5.5%
113306 Berbera 45.01474 10.44254 Auto 173.640 4.2%
113288 Kuwait 47.978333 29.369722 Auto 128.803 4.8%
113314 Mombasa 39.17123 -6.87662 Auto 127.192 3.6%
113308 Obbia 48.5268 5.3505 Auto 82.042 2.7%
113295 Karachi 66.99000891 24.8699922882 Auto 80.525 1.4%
113302 Sana 43.449097 16.375344 Auto 79.968 2.2%
113312 Brava 44.0310049 1.112777 Auto 74.083 1.2%
113294 Doha 51.5333333 25.2866667 Auto 73.684 1.7%
113293 Bahrain 50.55 26.0 Auto 69.084 1.9%
113296 Mandvi 69.350023 22.8310286 Auto 63.928 1.4%
113310 Kenya 37.3 -0.15 Auto 50.570 1.4%
113299 India 76.97021 22.20775 Auto 49.662 0.8%
113311 Mogadiscio 45.33407 2.046193 Auto 45.880 0.4%
113287 Büshehr 50.8385 28.9684 Auto 25.082 0.8%
ID Name Longitude Latitude Source Residual (km)
113289 Bandar-e Auto
113290 Abbås 53.114425 31.042489 Auto
113291 Pakist Auto
113292 Qat Auto
113297 Saudi 83.337650 28.067030 Auto
113298 Port Sudana Sawākin Auto
113300 Arabia Auto
113301 Jiz 42.798369 21.488029 Auto
113303 Sea Auto
113304 Laccadive Minicoy and Auto
113305 Islands Auto
113307 Ethiopia Auto
113309 Matáives Auto
113316 Aden Doha Auto
113317 Major 36.809720 -17.237220 Auto
113318 Zanzibar Auto
113319 Zanzibar 30.614900 2.252944 Auto
113320 Tanzania Auto
113321 Other dhow port Prevailing winds Auto
113322 Dar Auto
113323 Salaam Auto
113324 Prevailing winds July Auto
113325 Scale Auto
113326 Nautical Miles Auto
113327 Comoros Auto
113328 Kilometers Auto

About maplocate

Maplocate is a free map georeferencing service created by Karim Bahgat, with support from the William & Mary GeoLab.