Home > Dalam Kelas, Penugasan > Membicarakan Gambar dan Belajar Imajinasi

Membicarakan Gambar dan Belajar Imajinasi


Spasial perspektif

Windows XP "Azul" peaceful island wallpaper

Dalam mempelajari dan memahami keruangan (spatial) untuk diterapkan dalam sistem informasi berbasis referensi lokasi di permukaan bumi diperlukan cara tersendiri. Salah satunya adalah dengan menganalisis gambar dan kemudian menuliskannya sesuai dengan perspektif masing-masing.

Salah satu kegiatan dalam kelas, bersama mahasiswa, saya mencoba menggali kemampuan analisis dari masing-masing individu dengan cara ini. Saya berikan gambaran ringkas mengenai feature yang ada dalam Sistem Informasi Geografis (SIG). Tiga feature yang ada adalah: point, line, dan polygon.

Ketiga feature ini adalah penyederhanaan dari bentang alam yang sesungguhnya. Kemampuan untuk memilah dengan tepat ketiga feature tersebut akan meningkatkan kemampuan analisis secara keruangan. Perangkat lunak SIG hanyalah alat bantu, sehingga yang sangat berperan disini adalah pendefinisian dari sang operator dan analis terhadap obyek di lapangan.

Saya menugaskan kepada rekan-rekan mahasiswa di dalam kelas, pada satu kesempatan “kuliah malam hari”, di satu hari pada tahun 2009. Saya tampilkan satu gambar pemandangan yang didapat dari koleksi wallpaper dari Windows XP yang bernama “Azul”.

Setelah diberikan gambaran ringkas mengenai feature dalam SIG, maka mahasiswa diminta untuk menerjemahkan atau menentukan sendiri apa yang mereka dapatkan dari gambar tersebut terkait dengan point/line/polygon. Waktu yang diberikan hanya 10 menit untuk kemudian langsung dituliskan pada email dan langsung dikirimkan kepada saya saat itu juga.

Hasilnya adalah sebagai berikut:

Pendapat-1:

somewhere existed three units point, that reside in in a beautiful polygon in the middle of wide place, and have segment that arranged

Pendapat-2:

I have beautiful map. It maps has 3 component GIS is line, point n polygon. This map which has 2 polygon : big polygon and small polygon. The big polygon can be call as ocean and small polygon can be call island . between two polygon separate by line in attribute the line can call as boundary between island and ocean. In small polygon we can found 3 point and in attribute can we call as coconut tree..

Pendapat-3:

a polygon-shaped small island measuring approximately 25 meters square, is the island with white sand there are three points of a coconut tree, may not find the lake or fresh water, surrounded by a segment of the ocean. if this image we draw in raster or vector, it’s easy to be understand. from the image data can be concluded there was no fresh water to support human and animal life.

Pendapat-4:

in this picture, I see a small polygon shape in the very big polygon. there are three point in the small polygon and  there are some line in the big polygon that has irregular shape. i see one line that has straight shape.

Pendapat-5:

In this picture, visually we have the ocean, a small island, 3 coconut trees.
In spatial view, we can say that first, the boundary is limited in what we can see in the picture such as the ocean and maybe the beach.
We can consider the ocean as a big polygon and the island as a small polygon inside the big polygon. In the small polygon we have 3 coconut trees which can be considered as 3 points. One another thing is that viewing the ocean using continued data, we can see that the depth of the ocean is different in the middle of the ocean and near the beach. However, we must be careful because there are so many clouds so the clouds shadow my change our view of the depth of the ocean. Finally, this place has its coordinate (longitude and latitude)

Pendapat-6:

. point: a very beautiful sea with blue water, such as without limit
. point: in the middle there is a small island overgrown with three palm trees.
. point: Each of the coconut trees to bear fruit as much as 10
. point: the beach as a place to walk

Pendapat-7:

from the image above, with spatial data i can  describe that as region is represented as a polygon where the main polygon (big) is the sea area. in the middle of main polygon there are one small polygon is representation of land area and the last is the point (segment) which is a representation of the 3 palm trees in the small polygon and 1  point to show location of sailboat.

1 polygon (sea area)
1 polygon (land area)
3 point (palm trees)
1 point (sailboat)

Pendapat-8:

In the picture there is: the following points:
* Point: border with the sea coast, attribute: the beach in, shallow, medium
* Point: beach shade trees ==> attributes: palm trees, relaxing place, mangrove.
* Point: fishing location ==> attributes: the potential for large and small fish, reef areas.
* Point: a location for relax ==> attributes: the sun, beach volleyball, recreation
* Point:  sea borders ==> attribute: for surfing, swimming, fishing area.
Pendapat-9:
there is an island, with 3 trees, in the middle of the sea was beautiful.
Input:
– Point (IDP) any four, any line IDL) six, and any polygon (IDS) about one tree, one about sea and one about the beach …
– Map the input data, observations of tree height n few yards from the beach where the island’s
– Taking photos of the island and other communities imaginable on the island.
Pendapat-10:
That island is located in one location which is has a coordinate in degree or even in x and y coordinate. It has trees (coconut trees), beach, shoreline and the area of that island itself. In the map trees and the cruise can be represent as point, shoreline can be represent as line, coastal area (beach) and the island can be represent as polygon. If we go to that island and has a navigation tools (GPS for example)and also the aerial photograph, we can make a good map about where is that island exactly taking place. Measure the coordinate of each trees, make it as Ground Control Point, and each GCP is used to georeferenced the image. So we can find the coordinate like as usual map and never get lost when trying to coming back to that island.
Pendapat-11:
there are three point called coconut trees. one polygon is called island and one line is called coastline.

Apa yang disampaikan semua menarik, dan menunjukkan kemampuan membaca obyek di alam secara cepat. Tidak ada yang paling benar atau salah, karena maksud dari penugasan ini bukanlah untuk benar atau salah.

Bagi pembaca yang (kebetulan) pernah mengalami hal ini (hey guys..! pade dimane sekarang..?), semoga masih ingat ya…

: )

*/ pernah ditulis pada 29 Oktober 2009 di Catetan kecil httsan.

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