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

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1
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0answers
8 views

Set minimum scale on QGis Print composer (atlas)

I have a template ready to be printed on Print composer tool of Qgis. I need to fix a minimum scale while figures are represented one by one (1:10000) I would like to combine the scale tool controled ...
0
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2answers
40 views

Why 1 cm is 1 km in my map? [closed]

I have this map in ArcMap (you can download my map document from here), and I don't know why, but if I set the scale to 1:1, I can see my whole city. When I used the measure tool, I found out that ...
1
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1answer
34 views

How can I calculate the canvas scale in QGIS print composer?

Using the atlas functionality in QGIS 2.14 The canvas scale varies according to the object in question (national parks). I want to have a numbered scale based on the canvas print size. I tried using ...
0
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0answers
12 views

Meaning&Computation of range property in CMAPI map.view.zoom message

We are implementing a CMAPI 1.3.0 programming interface to abstract basic Gis commands from the actual Gis library underneath (Luciad Lightspeed 2016.0). In the map.view.zoom command, I don't ...
1
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2answers
68 views

QGIS 2.14 Essen Scale Setting Problem

The scale of the canvas plot shows in the status bar as everyone knows. However If I want to change the scale it refuses to work properly. This occurs whether I select a scale from the drop-down menu ...
0
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2answers
30 views

How to check my EPSG and units in R when it is not defined in proj4string?

After reading my .shp in R using readOGR(), I tried to figure out what is my EPSG and what are my units in my projections? when I tape my.shp = readOGR(dsn=setwd(dsn = dsn, ...
1
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1answer
29 views

ESRI Story Maps | Usage in large-scale maps/plans

If there´s a possibility to adjust the scale of the basemap to plan-like maps. Thing is, that i´ve got a map/plan of a greenhouse and i wanna make a "guide" through this greenhouse to show some rare ...
0
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0answers
41 views

How to scale polygon to obtain specific area in javascript?

I have got a source polygon (saved as standard js array). I want to scale it down to obtain new destination polygon in the centre with 1/3 of source area. On the cartesian space i just scaling down ...
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2answers
49 views

Is it possible to find the minimum map-able unit (MMU) after creating a map?

I'm not very good with the GIS lingo so I apologise if this doesn't make too much sense! Lets say I have just finished digitising the land cover of an aerial photograph and it's looking like the ...
2
votes
1answer
51 views

Polygon scaling using arcpy

Is it possible to scale each polygon by a numeric value in an attribute table field using arcpy. I have updated the code from some previous excellent work done by Evil Genius import arcpy import ...
1
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1answer
36 views

Printing at scale using MapInfo?

Using MapInfo 12.5, I want to be able to print a property at a set scale - say 1:1000 or 1:5000. What is the easiest way to do it? I want to be able to show a Scale Bar so that the user can ...
2
votes
2answers
35 views

Interpolation of point data with different scope

I need to interpolate a raster from point data (air pollution stations data). What I want to achieve is to distinguish the station's scope (or range or scale). For example some station's data are ...
0
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0answers
25 views

Inserting scale bar in ENVI without resolution loss

I am currently using ENVI version 5.3.1 and am trying to insert a scale bar to the image, in addition to the north arrow already provided by default. I have tried searching on how to do this with most ...
4
votes
2answers
67 views

Map scale based on altitude

I'm either missing something or failing at some basic math here, but is it possible to calculate the map resolution (map units/pixel) based on altitude (from sea level)? I have center coordinates and ...
3
votes
1answer
54 views

Way to Shrink Alaska and Hawaii for “Stereotypical View”

Is there anyway to shrink Alaska and Hawaii to create a map that looks like the stereotypical map with AK in the corner, etc.? I thought about trying to isolate AK and HI in their own layers and then ...
2
votes
0answers
15 views

How to create dynamic (depend on scale) coordinates grid in ArcGIS for Desktop? [duplicate]

I am working in ArcGIS Desktop. I want to dynamicly change my coordinate grid in layout view depending on map's scale. How to do that? Currently I have to change this manually every time I zoom in or ...
1
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0answers
19 views

In ArcMap, how much is a Zoom Out click [duplicate]

In ArcMap, when I zoom out (or in) a single mouse-click (not dragging a rectangle, just a click), what is the change to the ratio? If it is different between coordinate systems please explain it on ...
1
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1answer
33 views

Calculating scale for printing on paper

I will be making PDFs with maps on them. Two pages, one a4, one a3 format. Both will print the same thing, just one is going to be larger. Question - what scale do I print on the PDF? The number. If ...
0
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0answers
17 views

Scaling distance by area

For each administrative unit, I calculate the median distance between businesses. However, for larger unit, this distance is naturally bigger (and does not paints a fair picture of, say, the effort by ...
0
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1answer
160 views

How to calculate a map scale with bounding box, width and height?

I have a map that will allow the user to select or slice images/pictures out of it. As example a map width is 1200px * 1200px and the user selects say 700px x 700px square (note: aspect ratio is ...
0
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0answers
41 views

Why did the USGS use 1:24,000 scale for their large scale topo maps?

I can't find any particular reason this scale was used for most of their 7.5 minute large scale topo maps. At 1:24000 1"=2000' and 1cm=240m and the area per map varies between 49 and 70 square miles, ...
1
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0answers
39 views

QGIS: layer scale visibility

I need to display a line-type layer differently according to scale. Do I necessarily have to use a rule-based representation and make several different rules (one per scale interval) or is it possible ...
0
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0answers
58 views

Digitizing scale when digitizing from Bing imagery service in QGIS

I need to digitize a bunch of islands from imagery in QGIS. It is the Bing Maps aerial imagery layer. I will obtain all required permissions. My plan is to lock the map scale at 1:25,000 and use heads ...
0
votes
0answers
49 views

OpenLayers Layer.Vector with external graphic image overlay - scale help

I have this image overlay that has a lot of dynamic features associated with it, which are coming from a JSON file that's updated regularly with live data. I believe I need to use the Layer.Vector ...
1
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1answer
70 views

Merging two polygon layers with one layer having priority over the other

How do I merge two polygon layers? One is coarse scale over a large area (land use). The other is fine scale but is patchy (agricultural fields) in extent. I want the same extent of the land use layer ...
0
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0answers
13 views

different zoom level for same shapefile arcmap [duplicate]

I have a road Shapefile in ArcMap which includes three different type of roads highway, motorway, streets. I want to display all these roads at different scale. One way to do this is to create three ...
1
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0answers
43 views

Scale Selection Symbols with Reference Scale using ArcGIS Engine?

With an ArcGIS Engine application, I am trying to figure out how to have the Selected Symbols scale with reference scale when selected using ArcObjects. They are currently not scaling correctly in ...
0
votes
0answers
18 views

Cached services appear at all scales but not limited to the cache scales

Cached services appear at all scales but not limited to the cache scales Can anyone give an explanation why the Cached services appear at all scales but not limited to the cache scales, for example I ...
1
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1answer
88 views

Digitized Map To Scale

Is it perfectly acceptable to produce a map at a scale of 1:24,000 from a database that was digitized from a 1:100,000 scale source map?
0
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1answer
14 views

Scale and density values in density map appear wrong when in projected coordinate system?

I'm making a series of maps illustrating different aspects (road density, location of dams, elevation etc...) of a single watershed in California. In most of my maps, I've had the projection set to ...
4
votes
1answer
147 views

Is there a way to change the scale bar interval and other settings on individual Data-Driven Pages?

Sometimes I'll have a MXD set up as a mapbook using Data Driven Pages, but I'd like to display certain pages at a different scale than others in the same mapbook. I can do that using the Data Driven ...
0
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0answers
18 views

ETRS89-LCC true scale

With QGis 2.12.0 I made a map with the "EPSG 3034 ETRS89-LCC" I then modified the parallels of latitude with custom ones by the rule of 2:6, so from: +proj=lcc +lat_1=35 +lat_2=65 +lat_0=52 +lon_0=10 ...
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0answers
25 views

QGIS Data Frame scale

I am trying to setup the Data Frame in QGIS to a minimum scale of 1:0 like ArcMap does. Zooming in goes down to 25.000:1 Any suggestions? Thanks
0
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0answers
17 views

How to create a coverage layer (low overlap & fix scale)

I'm preparing a coverage layer from a linear SHP ( a pipe of 300 km). I use the tool "v.split.length" to cut the original SHP into several sections. In the box "maximum segment length" I manually ...
1
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0answers
14 views

Features becomes bigger on zooming in Openlayers 2.13

i'm new in developing Openlayers applications.I want to add Points and LinearRing objects to the same layer. My Problem is, when I add a LinearRing and I am zomming in, the geometry gets bigger and ...
1
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1answer
46 views

stack 10 modis ndvi geotiffs and scale them by 0.0001

I have 10 geotiffs Modis ndvi named 2005.tif ... 2014.tif I want to stack them all and create timeseries. i know how to do that, but the stacked images still need scaling by 0.0001. how can i bulk ...
0
votes
1answer
42 views

Frames from CAD to frames in Qgis

I'm trying to use some frames from Autocad (DXF / DWG) as a frame in Qgis (*.qpt??) but I don't know how to do it or if it's possible.
1
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0answers
36 views

QGIS Units and Scale

I am exploring QGIS 2.10.1-Pisa for the first time. I'm familiar with ArcMap, but I need to explore QGIS as an alternative. I am having a hard time trying to figure out the units and scale situation. ...
1
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0answers
95 views

QGis / Scale & scalebar wrong [closed]

First, I would like to apologize for the mistakes. My English is not very good. I read a lot but I don´t find the answer. I'm trying to put a scalebar in a very simple map but the measurement is not ...
0
votes
1answer
220 views

Zoom Scale in OpenLayers 3

Need to change the default zoom of OpenLayers 3 to do so adapted scales, type [1: 100000, 1: 50000.1: 25000.1: 10000.1: 1000.1: 500] have seen in Openlayers2 if you can, but at 3 I have not found a ...
1
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1answer
34 views

QGIS Labeling OSM items depending on scale

I'm working with OSM data in QGIS 2.10 (Ubuntu). I'd like to label items depending on scale. What I mean to do is to have only labels of "primary" roads from a scale of 1:80.000 down to 1:50:000 all ...
1
vote
0answers
57 views

Leaflet.js setBounds, scaling

I'm using leaflet.js to create a map of Scotland, with two insets for the Orkney and Shetland groups of islands. This is as far as I've got. I wish to guarantte that no matter what size the overall ...
0
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1answer
52 views

Setting up Hot Key to zoom to Map Scale?

I'm wondering if I can set up a hot key to zoom to 1:4500 whenever I use it. Also if I can set up a hot key to zoom in to 1:1250. I have these two extents set up in the custom extent area and when ...
3
votes
1answer
103 views

How to automatically assign current map scale to a shape created in QGIS?

In QGIS, would it be possible to automatically assign the current map scale to a feature created during an edit session and save it into a field in the attribute table? I have a series of OS maps of ...
1
vote
1answer
457 views

Geoserver SLD for min-max scale range display

I am new to GeoServer. I am trying to add a scale range to a layer that I am serving as a WMS. I want the layer to only be displayed between 1:30,000 and 1:1,000,000. I am using the max/min scale ...
1
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1answer
182 views

Checking layers with scale based visibility for visibility in QGIS

I am writing a Python method which I want the mouse click event to connect to. The method selects objects from layers that satisfy certain conditions. I want to select from any visible layer, that has ...
0
votes
0answers
58 views

Drawing Google Map & printing at 1:160 (N Scale for modeling)?

I would like to draw a Google Map between two cities crossing a mountain pass in the Western USA. That part I can do just fine. What I would then like to do is print it at the scale (am I using that ...
1
vote
0answers
12 views

Loading Shapefile with Work Network creating Negative Scale

For the company I work for, we have our own servers and network we load upon start up to do our work within QGIS. However its about 50/50 when loading an outside shapefile that it works. When I load ...
1
vote
2answers
183 views

Can TextSymbolizer font size be set as a function of the scale?

The standard behaviour when rendering WMS layers is to keep the text size across all scales and then filter out colliding labels so that the text remains readable, although delivering incomplete ...
0
votes
1answer
87 views

Creating polygon grid using fixed extent

I have a Shapefile of a town. I would like to divide the whole area into grids such that each grid has a scale of 1:2000. I have set my map to fixed scale (1:2000) in Layout View.