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

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5
votes
1answer
616 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
182 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
1answer
451 views

ArcMap Text Annotations Display in Proportion to Map Scale

My question is probably of an 'easy fix' however I've been struggling with it for a while! I'm trying to set up an annotation labels for several feature classess in a map and would like them to ...
1
vote
1answer
71 views

What does 8GK100K mean?

I have a lot of mosaic datasets: Zone8GK100k, Zone9GK100k, ... , Zone7GK25k, ... , Zone7Gk50K, ... , Zone7GK200K. As I know, 7GK, 8GK... are utm zone numbers. 1) What does 25K, 50k, 100k, 200k ...
1
vote
1answer
613 views

How to remove white parts in ArcMap 10.1?

This is the part of my map. On this picture you can see white strips. Some of this white parts are appeared on the intersection of 2 Mosaic Dataset (for eaxample, there is the real map in 1 Mosaic ...
0
votes
1answer
50 views

What is the scale and does it depend on the print out size?

I am new to ArcGIS and I would like to know what is the scale in ArcGIS and does it depend on the print out size or display? Can any one explain all about topic scale in the ArcGIS?
0
votes
0answers
93 views

how to set default scale value while loading map in QGIS?

I need to set scale value (x) for map loaded to qgis. This should be default so whenever i load map it should scale to x automatically. How to do this? Where should i insert code in QGIS source. I ...
1
vote
1answer
380 views

QGIS Shapefiles have the same CRS but dont line up. (Census Tiger Data & State Data)

I have the Census Tiger data for Oregon from http://www.census.gov/geo/maps-data/data/tiger-data.html Then the bottom one of 2010 Census Population & Housing Unit Counts — Blocks. The shp ...
2
votes
2answers
330 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
2answers
68 views

Scalar relationships ArcGIS

I have point data which has a number of fields/columns, each of which is at a different scale. I'm looking to find a way of constructing a very simple index which would combine this data. Say I have 3 ...
3
votes
2answers
851 views

Figuring out map scale when you know the spatial resolution of a Satellite Image?

I'm interested in figuring out how map scale and satellite pixel size (spatial resolution) are related. For example the TM or ETM+ has roughly 30m ground resolution, then, what could be the finest ...
1
vote
0answers
102 views

Set scale for labels

I have multiple shapefile with different geometry and I am trying to on a label of layers. For create a map I am using Geoserver and Openlayer. Requirement is layer are visible on a max zoom level ...
1
vote
2answers
598 views

How do I import OS raster tiles into QGIS at the correct scale?

I have some tiles of OS raster mapping and their associated TFW georeferencing files. The GR files are in the same folder as the raster data and have the same names, ie TQ21.tif/TQ21.tfw. In QGIS ...
3
votes
0answers
115 views

Use ArcPy to identify annotation reference scale?

I would like to retrieve the value of an annotation feature class reference scale using ArcPy (under ArcGIS 10.1). I cannot find where this property is stored (tried to access using the describe ...
0
votes
1answer
310 views

Adding a scale using SDK GXP OpenGeo Suite

Followed the tutorial using the OpenGeo suite SDK, and looking at adding a scale to my maps however the tutorial doesn't cover adding widgets only plugins. So I am not sure about how I would add ...
0
votes
1answer
100 views

Integer rasters referring to the same scale

I'm using ArcMap 10. I want to display the area of simulated avalanches. I want this area to be divided in different colors depending on the thickness of the deposit. I managed to do that. But I want ...
3
votes
1answer
198 views

Sensitivity analysis for coarse scale GIS epidemiological model?

I am working on an epidemiological model with disease incidence rate as dependent variable and environmental factors as independent variable. Disease data is available at county scale whereas ...
0
votes
0answers
19 views

Scale factor (constant not linear stretch) GDAL [duplicate]

I need to re-scale a geotiff with gdal. I'm aware that gdal_translate has a -scale function, but i need to actually apply a constant (eg value(x,y) * 100) instead of scale the pixels to within a ...
0
votes
1answer
114 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
0answers
167 views

MapServer Mapfile: Scalebar not displaying correct distances?

Scalebar: SCALEBAR LABEL COLOR 0 0 0 SIZE SMALL END STYLE 0 SIZE 180 8 POSITION lc COLOR 0 0 0 UNITS MILES INTERVALS 2 TRANSPARENT TRUE STATUS EMBED END I didn't even ...
1
vote
1answer
73 views

How to scale map appropriately?

I am suppose to make a map. The specifications are 1:50k scale centered on a certain point. They want to view a distance of 30 miles from that centered point, but when I scale to 1:50k the map is ...
0
votes
2answers
415 views

How to scale/reduce my polygon without changing the central lat & long?

I am writing a VBA code to resize my polygon, I get a input as vector points(Shape file). The code below resizes it as according to my scale factor but my central latitude and longitude are also ...
4
votes
2answers
108 views

“GIS” Mapping on Monument - Scaling

I have a Baroque tombstone for which I have to map the damage phenoma. Normally one can use a vector drawing programm but one has always two boundaries between the different polygons. Questions: Is it ...
5
votes
2answers
504 views

What does Scale mean in the reference of Desktop GIS or WebGIS?

I'm having trouble understanding the meaning of the concept of scale when it comes to maps on screen, i.e. either in a Desktop GIS or in a WebMap. When it comes to paper maps, the idea is very clear. ...
0
votes
1answer
396 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 ...
0
votes
1answer
53 views

Fixed Scale / Fixed Zoom in eCognition

im wondering if there is any option in eCognition Developer / Architect were I can control Zoom or Scale Factors. Its neccessary for my work that i use the same scale for all processing steps. Maybe ...
5
votes
1answer
2k views

How to calculate the bounding box by a given center and scale in Android?

Given these conditions: a scale like 1:50000 the center of the viewport is 100°E, 20°N the size of the viewport is 400x600 How can I calculate the bounding box of the viewport? Update after ...
2
votes
1answer
364 views

importing coordinates via a csv file does not work

I tried to manually add point data via a CSV file to an empty project in QGIS 1.8.0. The points do show up all right with the correct coordinates, but already the scale is not correct (using the ...
1
vote
0answers
99 views

What are the standards to implement scale bar?

I am working on .osm data files, and now i want to implement scale bar for available data. logically i have created the scale pixel is to geo location. I want to know whether there is any standard to ...
5
votes
1answer
341 views

Georeferencing a jpeg in QGIS but the scale is way off

I've gone through the really helpful walk-through(s) of how to georeference a jpeg in order to make it a layer, but after inputting the coordinates (either by typing in actual coordinates or clicking ...
0
votes
1answer
137 views

How do I essentially crop an ArcGISTileMapServiceLayer as an object while maintaining the integrity of the basemap

I am using the up-to-date flex api and esri api for flex. I know how to use flex to obtain a snapshot of a map, but ultimately what I want to do is retrieve a scaled up image of a part of the basemap. ...
7
votes
2answers
245 views

What does map scale refer to in map making / field survey metadata?

If I have, say, a printed map at the scale of 1:20000 and the legend says that it was mapped at a scale of 1:10000 does this simply mean, that the surveyors/cartographers made drafts & sketches or ...
0
votes
0answers
193 views

Can you insert a marker symbol at a specific scale?

I have a map that is consistently used at a 1:500 scale. I want to be able to add structures to the map to view and move them around to get the best fit. The end user is new to GIS and I am trying to ...
3
votes
0answers
1k views

How to use Scale tool when Georeferencing Raster in ArcMap?

I'm georeferencing a bunch of maps in ArcMap 10.0. The Shift and Rotate commands are pretty easy to use, no problems there. But whenever I use the Scale command, the image completely changes ...
2
votes
0answers
61 views

Set a user scale to use QGIS for surfaces documentation

I would like to use QGIS for the documentation of mural paintings (so I don't need georeferecing) I would like to set my own scale from a raster file (measure a know distance and use it as reference). ...
2
votes
1answer
447 views

How to Determine to world map size in pixel given this data?

How to Determine the world map size in pixels given this data? Map size of a particular area say, for example: Makati city, Philippines with bounds: Top-Right: 121.0281, 14.56497 Bottom-Left: ...
3
votes
1answer
356 views

Clarification of Map Scale

I need some clarification. I have a map the is set to the scale of 1:6000. In Settings>Project Properties, under the General tab I have the Layer Units set to feet. Therfore I assume that means the ...
3
votes
1answer
399 views

How to get correct scale values?

The scale of my map is wrong, no matter what coordinate system I use in my project. The map and all objects show the correct coordinates but the scale of the map shows nonsense and the measurement ...
1
vote
2answers
496 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 .
4
votes
1answer
416 views

How to use scale -rule based renderer in QGIS?

I wish to render a shapefile of builindings such that at scales below 1:5000, they have a border, and above 1:5000, they do not have a border. For this, I went into layer properties, selected ...
5
votes
2answers
414 views

Can you print cross-hatch area fills like they appear on screen?

I'm trying to use a cross-hatch symbol on polygons in QGIS. When displayed on screen, they look just fine - both in the map and in the composer. The problem is when they are rendered to an image ...
3
votes
1answer
87 views

Is there a way to scale to 1:1 in QGIS Cloud?

Someone knows if with QGIS cloud Pro Plan, it's possible have a scale till 1:1. I use QGIS to draw small stuff on my gis (archaeological finds, as really small pottery's sherds) and I need a scale ...
1
vote
2answers
2k views

What do I need to change to get scale bar units other than degrees?

Measurements done in QGIS on my project are done properly using whatever unit is set in: Settings > Options > Map Tools > Preferred measurements units but the scale bar decoration and scale bar in ...
4
votes
1answer
311 views

Why do base and overlay only match at scale 1:1000 and 1:2000?

We are using GEOSERVER 2.1.4 to overlay WMS on GoogleMaps V3 with Openlayers . The problem we have is at different zoom levels the scale of the WMS overlay is different from the scale of the base ...
1
vote
1answer
1k views

displaying scale of dyamic map service layer using ArcGIS JS API

In ArcGIS JS API, I would like to know and display the scale of a dynamic service layer by using the onExtentChange event, but the LOD argument is only valid for tile map services. Is there an ...
2
votes
1answer
278 views

Python script for Data Driven Pages to run a series of DDP at once?

I have a several different polygon shapefiles that I am using to create individual maps for each polygon within the shapefile. The layout is the same for each map, the only thing that changes is the ...
4
votes
1answer
314 views

how does arcmap calculate scalebar inside a WGS84 layout?

ArcMap lets you put a scalebar inside a layout referncing a WGS84 data frame. How is the scale calculated? Is it a "mean" scale? And, in case it's right, what "mean" scale could mean?
1
vote
0answers
257 views

ScaleLine shows NaN for LCC projection

I have used openlayers along with geoserver. My Map is having LCC projection by default, but SRS is EPSG:4042. The problem is that the scaleline shows NaN in meter as well as feet. How can I correct ...
0
votes
1answer
121 views

Why are grid and scalebar measures 1mm too long in a 1:10000 print?

I used qgis 1.8 to compose a map from the WMS-service of the Belgian NGI. I added a scalebar and grid to it. When I measure it by hand, the distance between the longitudelines is 101mm instead of ...
1
vote
1answer
327 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?