The ratio between distances on a map and distances in the world

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1
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1answer
50 views

Printing map to scale

How to print this map (page) to 1:500 without georeferencing or without using any gis software. It is better to say that the marked line of 3 km should be 6 cm on paper (A4). See image:
1
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0answers
13 views

Annotation/Label size adjusting to map scale in QGIS

I'm trying to label the street names for a map I'm working on but I do not want the labels to automatically adjust to the map scale when zooming in or out. My question is: In QGIS how do I set a fixed ...
1
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2answers
99 views

Rasters added to mosaic dataset only display at large acale

I have a set of 357 rasters in .jp2 that I've added to a mosaic dataset. All but 7 of them display properly, but the 7 only display at larger scales, around 1:6500 and under. I've tried adding them ...
1
vote
1answer
320 views

How can I convert my scale bar from milimetres/ degree into metres or kilometres using QGis?

I am making a map in print composer. I am trying to add the scale bar and it's appearing as a box with a zero digit inside it. What should I do to make it display properly?
1
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3answers
24 views

Scaling Items in the Legend [duplicate]

I am using ArcGIS 10.1. I inserted a legend however the items in the legend are too large because of the size i set them in the data view. How do i scale the items in the legend so they will be the ...
1
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0answers
18 views

Scale on map requires correction coefficient. But why?

I am computing the distance of a map I am getting from ArcGIS' REST services by using a calculator as provided by this answer. In a nutshell, it uses a GeodeticCalculator for distance computation ...
27
votes
8answers
38k views

What ratio scales do Google Maps zoom levels correspond to?

Can anyone provide me with a link (or some details) on the actual ratio to "zoom level" figures for Google Maps? e.g. Google Maps Level 13 = 1:20000
0
votes
2answers
80 views

Defining a scale number from the Helmert transformation

I know this is more bit of a cartographic issue, but maybe somebody would be able to help. I have an old map georeferenced to the openstreetmap with 50 identical points. I want to get the scale of the ...
1
vote
1answer
40 views

Shapefile not projecting correctly [duplicate]

I am still new to this, so I apologise if I don't make a lot of sense! I am using QGIS 2.4.0 Chugiak. I am working on a project set to the GDA94/MGA Zone 50 coordinate system with 'on the fly ...
1
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1answer
23 views

Calculate geographic size in meters given lower left coordinate and upper right coordinate

How do you find the geographic size in meters given a lower left coordinate and upper right coordinate. The projection would be WGS84 projection. Ex. 33,-119,35,-117. What would be the area in meters ...
0
votes
1answer
184 views

How to add Map Legend, Scale Bar and Select tool to an ArcGIS Server Service?

I have published a service from ArcMap to my Server Account but I can't figure out how to add the legend, scale bar and select tool to the service. According to the published service it was built ...
2
votes
1answer
95 views

Why are map scales not used instead of Zoom-levels in web mapping clients such as OSM or Google Maps?

Google Maps and OpenstreetMap and many other web mapping products utilize the concept of zoom-levels to change the size of the map in a web client. Most people are however more familiar with the ...
0
votes
1answer
102 views

Default Opengeo suite print module- scales given in selector differ when using the zoom slider

Using a default installation of the 3.0.2 suite, opening the Composer view(with the MapQuest OSM tiles as background) and clicking print (to pdf) to activate the print preview there appears to be a ...
0
votes
1answer
339 views

Setting a scale range for labels in KML files

Is there a way for labels to be displayed in KML only when zoomed in (or out) beyond a certain scale range, just as it is possible in ArcGIS? If exporting to KML from ArcGIS, I guess the first step is ...
2
votes
0answers
23 views

Choosing the map scale (1:nnn) for the given raster dimension

Starting points: let define the raster image size, say: 1800x900 pixels I want draw my own raster image map - by drawing polygons e.g. like "draw line from pixel with coordinates x100y100 to pixel ...
1
vote
1answer
40 views

Why are my points being flipped or mirrored when I convert from DMS to DD?

I have a collection of crash data that provides latitude and longitude in degrees, minutes, and seconds that I'm converting to decimal degrees using: (degrees + (minutes/60.0) + (seconds/3600.0)) ...
0
votes
0answers
35 views

Scale keeps changing in QGIS composer?

Every time I pan the map content in the QGIS composer window the scale changes. Is there a way to make it stick at specific scale?
0
votes
0answers
27 views

Enlarge region/features in shape file

I'm completely new to QGIS. I have a shape file over the counties in Denmark (see here for what the shape file looks like). The counties around Copenhagen are rather small and I'd like to add an ...
0
votes
1answer
52 views

problem in scale of projected raster

I have a shapefile (my basin limit) and one raster file that I projected it to the shapefile coordinate system and set its cell size to 1000m(area=1Km2). my basin area is 5400 Km2 and it should ...
0
votes
0answers
20 views

How specify QGIS scale settings according to project?

I have a layer in QGIS named rivers. I want to view this layer between 1/5000 and 1/400.000 scale. But when I open QGIS, I see the default scale is 1:-2.147.483.648 I setted the project scales from ...
5
votes
3answers
1k views

Using GIS for Interactive Floor Plan

GIS is brand new to me, but I've spent a couple of days researching so that I can at least ask somewhat intelligent questions. I've decided to use QGIS I need to do an interactive floor plan on the ...
1
vote
1answer
65 views

Why is the scale on my maps a bit too big?

I saved couple of pdfs when I relized that the scale I set is not the scale that shows, everything is a bit bigger. I tried to check it not only at the print composer, but in the "work space" and it ...
1
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0answers
46 views

Web site for plan upload and measure

I've got plans of my house and a warehouse on paper. I would like to scan them in JPEG, import them on my PC and measure them. I'm looking for a website where I can upload those tiff, jpeg or pdf ...
0
votes
0answers
10 views

OSM exports at different scale to what is on screen

I am using ArcGIS 9.3.1 I have added OSM as a WMS layer. I have a map set up how I want it to look in the layout view. When I go to export the map, whether as an image file, or in AI, which is the ...
2
votes
2answers
77 views

Scale and Z factor have no effect on hillshade analysis in QGIS

I used an SRTM DEM to create a hillshade in QGIS 2.2.0. However, the resultant hillshade seems to be vertically exaggerated. Also, changing the settings for scale and z-factor does not have any effect ...
1
vote
0answers
68 views

qgis html annotation - scale dependent rendering?

In the QGIS 2.2 map composer, I have a large map at a certain scale (let's say 1:25000) and an inset map that is an enlargement of part of the main map (let's say 1:12500). When adding html ...
0
votes
0answers
49 views

qgis html annotation does not respect 'Lock layers for map item' in print composer

In the QGIS 2.2 map composer, html annotation objects do not seem to respect the 'Lock layers for map item' checkbox. Unless an explanation / solution surfaces, I think this is a qgis bug and I'll ...
1
vote
0answers
69 views

Mapfish printing application from Openlayers : disableScaleLocking

Mapfish printing application from Openlayers: I get the following error when I use a different scale than the scales defined in the config.yaml even though I am using disableScaleLocking: true ...
2
votes
0answers
2k views

How to zoom exactly to a desired scale in Flex?

I am using ArcGIS API for flex 2.4 with ArcGIS server 10. I am trying to write the widget where user can define the map scale (type it in text box) and it will zoom to that scale. I successfully ...
1
vote
0answers
63 views

Maximum scale dependent visibility changes from 1:0 to -2147483648:1

QGIS 2.0.1 Dufour. When i open the layer properties and the scale dependent visibility is unchecked and when i check it, the maximum (inclusive) shows 1:0. I click Apply, OK, reopen layer properties ...
0
votes
2answers
168 views

How to set map scale using Arcgis silverlight Api?

I want to set map scale manualy using ArcGIS Silverlight Api . I use silverlight api 3 and arcgis server 10 . I have 4 scale levels and I want to show the map in these scales. How can i set these ...
0
votes
1answer
150 views

Map scale vs. map extent vs. map canvas size in Print Map Composer

Please help! I am so beyond frustrated. I am using QGIS 2.0 and when I try to create my map in the print composer, I cannot make the scale and the extent the way that I need it. I need my map to be ...
2
votes
1answer
102 views

How can I set a specific meter scale in the print map composer?

I am making a map for an orienteering class at the environmental education center that I work at. In order for us to easily calculate the distance between orienteering points, I need the scale to be ...
0
votes
0answers
37 views

How to get tiff file of project limits at specific scale using QGIS 2.0?

I have shapefile which has a layer extent scale of 1:551920. I want the TIF file exports of the file at a scale of 1:200000. Is there way to do it automatically? Or do I have to do it manually by ...
0
votes
0answers
31 views

QGIS pixel/square cms using scale, dpi

The data (vectors) I'm using are 5cm in resolution. I think that resolution refers to accuracy of the data and not the image resolution. I've produced maps using the QGIS print composer and exported ...
0
votes
1answer
130 views

Error in raster displays of NoData cells when “zoomed in” past scale 1:3,000,000

I looked around GIS stack exchange and ArcGIS Help pages and didn't find anything on this issue. I have encountered an error in how Arc displays a Raster file (.TIF format) at different scales. At ...
1
vote
1answer
81 views

How to calculate size of a pixel for a scanned map?

A land use map has a scale of 1:150000. The map is scanned at a resolution of 150 DPI. What will be the surface area in m square represented by each pixel in the resulting easter map?
3
votes
3answers
70 views

How do I create a map that is not to scale in QGIS?

I want to make a map that isn't to scale and I'm so used to being pedantic about CRS and scale that I don't know where to start. The map that I need to make is a simple guide for people to get to a ...
4
votes
2answers
82 views

Measuring scale for small scale maps

A cartography question: you open an atlas and usually at the beginning of it there are some world maps showing various thematics. Let's say the world map uses Robinson projection and it says it has a ...
2
votes
1answer
31 views

references for the colloquial naming of spatial data resolution

In our era of data deluge, many folks, including myself, quest for ill-defined "high-resolution" datasets. I suspect that colloquial description of spatial resolution as "high" or "low" is and will ...
2
votes
3answers
185 views

How can I change map scale in ArcMap, after I'm almost finished digitizing? [closed]

I'm just about to design a map that represents different areas in my immediate living environment. I Unfortunately made a big mistake at the beginning of my project. The current scale is given by ...
0
votes
0answers
80 views

issue with QGIS Scale Level

I have different layers of shape files. I have imported all shape files into PostGIS. Now i want to show 3 layers Country, State & District with different scale/zoom level I tried to set scale ...
2
votes
1answer
395 views

ArcGIS giving measured distances and the scalebar incorrectly

I am currently using ArcGIS 10.1 and am struggling to be able to measure distance or set a scale bar correctly. Its currently giving me absurd results orders of magnitudes to small (0.5m etc). All my ...
0
votes
2answers
187 views

Is it possible to set a reference scale in QGIS?

It's a little tricky to pick label and feature styles (line thickness, colours, etc) in the map canvas because they don't reflect what I would see in my print composer which is at a different scale ...
2
votes
2answers
232 views

How do I know the vertical/horizontal units of my DEM? I'm creating a slope using gdaldem

I'm using gdaldem to create a slope map. I can apply a scale. The default is 1. The notes say: Ratio of vertical units to horizontal. If horizontal unit of source DEM is degrees (e.g WGS84 ...
0
votes
0answers
24 views

Can I set the units for item properties scale field in composer?

This question is about the scale field in item properties, it's NOT about scalebars on a map. I'd like to be able to set the scale to something that is readable without using a calculator. So let's ...
4
votes
1answer
424 views

How to automatically generate useful scales for data driven pages in ArcGIS desktop

I have been tasked with creating several hundred maps of properties that intersect a long pipeline. The maps will zoom to the part of the property which shows the intersection. The lengths of ...
5
votes
3answers
173 views

How to know if shapefile is georeferenced?

I have a shapefile which is located in province in indonesia. it contains many sub-province if i removed sub regions inside a shapefile, and it leaves a small region, and my question is that small ...
1
vote
2answers
401 views

What is the default unit for QGIS scales and how do I set it to KM?

I want to render a specific layer only between 0-12km but have no idea how to set it in QGIS because the scales dimensions are high numbers. My project and layers CRS is EPSG:2039 Thank you .
0
votes
0answers
35 views

Scalebar unit different from project unit (QGIS) [duplicate]

I use QGIS 2.0.1 Dufour. My shapefiles and project is in that directory on Copy: https://copy.com/s7h6ZiiRJMXe All my shapefiles is in WGS 84, so.. the units is in degree. I want that units of ...