# Questions tagged [cartography]

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### How can a starting point south of the north pole to an endpoint north of the south pole be halfway around the world?

NOTE: I first posted this question to the GIS StackOverflow site, but someone there said my question would be better suited to the Geography or Earth Science site. GIS seems the perfect place for the ...
109 views

### Complete missing outcrop problem

Given A is upper limit of sand stone, B is the lower limit of the planes that are equal in distance and dip. Dip angle is 29 degrees. Complete the outcrop of this map. —————————————————————————- Now I ...
20 views

### Literature on thematic 4D maps

I need to understand more about thematic 4D mapping. I would roughly classify it as a method of cartography. In particular I want to do research on what software is being used to create thematic 4D ...
4k views

### How much distance does $0.001^\circ$ in latitude or longitude represent?

If I'm standing at a lat of 30.000$^\circ$ and a long of 30.000$^\circ$ and I move to a lat of 30.001$^\circ$ and a long 30.000$^\circ$, how far have I gone? Is there a relationship between decimal ...
3k views

### Is there a map that displays every country at its correct relative size?

I know that the standard Mercator projection is completely wrong when it comes to the relative sizes of countries (Greenland appears relatively much larger than in reality, for example). AFAIK they do ...
426 views

### Understanding the Mercator Projection

To illustrate my problem, let's say I have lattitude and longitude coordinates, such as 38.871105, -77.056042. I want to be able to calculate the new lattitude and longitude if, say, I moved 300m ...
1k views

### What are the differences in terms of appearance between sandstone and limestone?

On the field, I find it very difficult to differentiate the two types of rocks just by looking at them.I know that you should do some analysis of the sample before any conclusions. But, for example in ...
65 views

### Is sterescope still used to do cartography with orthophotography?

I used this tool at my degree a couple of lusters ago to do cartography with aerial orthophotos. We used it on cartography and geomorphology subjets. Source: gumtree.com The method consists ...
189 views

### Great circle in UTM coordinates

I've got a question about calculation of great circles in Cartesian coordinates: Is it possible to compute points along a great circle in UTM coordinates, i.e. given two points P1(easting1, northing1)...
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### Are there seamounts as close as 100 m to the water surface and not inside any Exclusive Economic Zone?

I did not find any seamounts as close as 100 m to the water surface (100m from the mean surface level at the location of the mountain) that are not part of any Exclusive Economic Zone (EEZ.) Do any ...
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### What is the maximum value of Easting in UTM coordinates?

What is the maximum value of Easting in UTM coordinates? In many websites I found the answer of maximum value is about 834000 meters, but if you convert some of these coordinates below the value will ...
409 views

### How much of Earth's land area has antipodal land area?

Using the site antipodesmap one can quickly explore what the opposite point of the earth to any location would be. That is, the surface point connected to this point by a straight line through the ...
261 views

### Is there a better system than latitudes and longitudes? [closed]

I am a student programmer, with very little knowledge of geography and am working with maps for a project, and have to convert latitudes and longitudes to points on a screen (map to pixels). So my ...
332 views

### Elevation of a point on Earth

What purpose is served by taking sea level as the reference point for finding the height of any point on Earth when we all know that measuring the sea level is a very complex task and it differs from ...
76 views

### Inconsistency between topographic survey and Google Earth

For a piece of land in Peru (Zone 18K), I was provided the following UTM coordinates (showing just one): 140800 E 8176337 N. However, when I look up the site on Google Earth, while the N coordinate is ...
56 views

### Is there a name for the process of producing positional data for cartography?

Map-making requires two distinct processes, first to produce the data -- latitude, longitude and elevation -- of the points to be mapped; and second to represent this data on a flat surface as a map. ...
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### Why is the north considered as up, and south as down?

This question popped up in my head while watching LOTR, in wich a tree says: going south always feels like going down.
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### GIMMS NDVI3g grid cells not entirely square-shaped?

The official data description of the recently updated GIMMS NDVI3g record describes the grid parameters of the dataset as follows. ...
58 views

### What is the technical term for spatially aggregated measures?

Is there an adjective to describe data that has areal weight, like area, biomass, population, etc. — data that has to be aggregated by sum for example — vs. data that doesn't, such as landcover ...