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Questions tagged [normalize]

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8
votes
3answers
4k views

Normalizing point cloud data

How I can get Digital Height Model (only object heights, DSM - DTM = DHM)? Many applications can do this, but they convert it to GRID or TIN format. I was wondering if it was possible to keep the ...
6
votes
2answers
456 views

Why is a normalized parameter involving the Green band and Red band not used for Vegetation determination?

The green region reflects solar energy sufficiently well. So does the NIR region, much more than the green region, indeed. However, reflection in Green region is based on the chlorophyll concentration,...
5
votes
5answers
9k views

Normalizing raster using raster calculator in ArcGIS 10.3.1? [duplicate]

I have been trying to 'range standardise' or normalise my raster values from 0-100 and I know how to do this mathematically: ("raster"-min("raster"))/(max("raster")-min("raster"))*100 and I have ...
4
votes
1answer
200 views

Is the ground level cross section of a normalised lidar dataset flat? [duplicate]

If I normalise a lidar dataset I am (according to my thinking) simply subtracting the first return heights from the ground heights. Thus the resulting dataset will only contains the height above ...
3
votes
3answers
533 views

Can USA streets have both, name and number?

I'm working normalizing list addresses using Tiger Geocoder normalizer and a python library, usaddress E.G. For these two I have: 5121 33RD ST N House_no = 5121 street_no = 33 1656 HABERSHAL DR ...
3
votes
1answer
1k views

Find maximum and minimum value in a list of rasters

I trying to write a standardisation script that standardises each raster dataset in a list of rasters by the highest and lowest values found in the list of rasters. The standardisation code is as ...
3
votes
2answers
250 views

How can I Normalise Drunk Driving and Postcodes data?

I have been provided a dataset of drink driving incidents aggregated into postcodes. This is where the incident happened, not where the driver lives. Postcode 1 - 12 incidents Postcode 2 - 163 ...
2
votes
1answer
79 views

How to normalize choropleth maps of startups by state?

I want to display on a choropleth map the startups of a particular domain that operate in that state. I have a count of startups by state. How do I normalize so that the map is not represented ...
2
votes
1answer
183 views

How to normalize Landcover criterian Map to 0-255 scale in Weighted Linear Combination?

I am interested to normalize Landcover raster image having 6 classess using fuzzy membership function (sigmoidal monotonically increasing) in Weighed Linear Combination (WLC) in the backdrop of MCE ...
2
votes
1answer
160 views

Creating filter stage of type filters.height using PDAL?

I use PDAL to find the height of points from LiDAR data. When I run the command: pdal translate myfile.las height.bpf height --writers.bpf.output_dims="X,Y,Z,Height;" It throws me the following ...
2
votes
2answers
3k views

Converting LANDSAT-8 TIFF to matrix, data frame, or SpatialGridDataFrame formates

I need to correct the reflectance values of LANDSAT-8 data for steep terrain and find it too tedious and clunky in ArcGIS. The data I have is: LANSDAT-8 DEM (ASTER) Slope and aspect (Derived using DEM ...
2
votes
1answer
151 views

What does the GEOS LineString “normalize()” routine really do?

What does the GEOS LineString "normalize()" routine really do? GEOS has virtual void geos::geom::LineString::normalize() with the documentation: A normalized linestring has the first point which ...
2
votes
0answers
547 views

Normalization of Kernel Density Estimate rasters in ArcGIS 10

I've been told by several GIS instructors that the pixel values of a Kernel Density Estimate raster output by the point KDE tool in ArcGIS 10.1 represents the probability of encountering a point, not ...
1
vote
1answer
682 views

Normalizing raster using raster calculator raises TypeError

In ArcGIS 10.1 I'm trying to normalize a section of a DEM (digital elevation model) from original values to values ranging from 0 to 100. First I clipped the raster DEM with an irregulary shaped ...
1
vote
1answer
477 views

Normality, Ordinary Least Squares (OLS) and Geographically Weighted Regression (GWR)

Most of the publications I have reviewed, conduct both OLS and GWR for comparison, and prior to analysis, ensure dependent and explanatory variables are normally distributed. Can someone explain why ...
1
vote
1answer
59 views

Standardizing number of jobs and sales per state for choropleth map?

I want to show the change in jobs and sales per state from 2006 to 2015. Since I will be making a choropleth map, does this mean that I need to normalize the job and sales numbers before I make the ...
1
vote
2answers
357 views

Can't normalize LiDAR point cloud with lasheight and -replace z (LAStools)

When I try to use lasheight with -replace z to normalize the point cloud, the height of points are changed (destroyed heights; see pictures below). Without using -replace z everything is ok, but the ...
1
vote
1answer
475 views

Count points in polygon by attribute column for making choropleth

I have a point shapefile of complaints for NYC. I also have a polygon shapefile of community district boundaries with an attribute column for the community district number. Is it possible to count ...
1
vote
1answer
283 views

Normalize address query not working in postGIS

Okay, so I'm new at SQL, so bear with me. I'm trying to use the tiger extensions on postGIS (2.1.7) to normalize my addresses and then geocode them. The normalize query runs, but never returns an ...
1
vote
0answers
40 views

Pre-Processing for multi-sensor Time series analyses based on Landsat Level 2 imagery

I downloaded TM, ETM+ and OLI Surface Reflectance Higher-Level Data Products (atmospheric corrected) based on L1TP Landsat images (radiometrically calibrated, orthorectified). I need to include images ...
1
vote
0answers
54 views

Conversion to normalized radar cross section of PALSAR data in Google Earth Engine [closed]

I am mapping deforestation driven by palm oil expansion in Malaysia. I am using ALOS PALSAR data from JAXA available directly on Google Earth Engine. Those data are raw and I'd like to process them ...
1
vote
0answers
64 views

Normalization where the smallest grid value gets the biggest value with “rescale by function”

I tried to normalize a density analysis between 0 and 100 with the tool “rescale by function”. The tricky thing is now, that the smallest value out of the density analysis should get the value 100 (...
1
vote
0answers
29 views

Light normalization of Orthophotos to increase comparability

I would like to work with the RGB-values of different orthophotos. Now I noticed that the light conditions are not the same in the different orthophotos. I was wondering if there is a sound way to ...
1
vote
0answers
66 views

Comparing normalize options of ArcGIS Desktop?

I am wondering if the tool “rescale by function” is definitely doing the same than the raster calculator with the expression ("raster"-min("raster"))/(max("raster")-min("raster"))*100? (I guess so, ...
1
vote
0answers
36 views

Normalizing raster data: getting a range of output values as opposed to a Boolean output [duplicate]

I converted a polygon shapefile which defined ED boundaries to raster. The value i based the raster surface on was a population count for each ED. The values ranged from 568 and 18160, as expected, ...
0
votes
1answer
404 views

Normalizing a digital surface model? [closed]

I am trying to generate a normalized DSM by subtracting the original DSM (oDSM) from the DTM. To generate the DTM I had to first use a median filter on the oDSM (remove noise) and then use a ...
0
votes
2answers
352 views

Normalize and Results show as Percentage

I've Normalized my data and everything looks okay. However, its appearing (on my map legend and in the Table of Contents) as a ratio (Ex: 0.000-0.005) but I would rather it appear as a percentage (Ex: ...
0
votes
2answers
238 views

Normalize geo coordinates from trips with several stops

Trips on the globe I have a large number of trips, each containing one to five stops from origin to destination. Each stop is given with geo coordinates. Target projection I would like to transform ...
0
votes
2answers
73 views

Relative Radiometric Normalization of multisensor Landsat Level 2 images using R

For my time series analysis, i need to use images of the three Landsat sensors (TM, ETM+ and OLI). I chose the already atmospheric corrected surface reflectance/Level-2 products. Due to the ...
0
votes
1answer
59 views

Use of US Census data to plot house value range

The house value data from the US Census Bureau is provided as a table differentiating areas into census tracts. My understanding is that they categorize each tract into quantities of homes fitting ...
0
votes
2answers
43 views

Why reflectance map in pix4d dont are normalized

I want to know, why my reflectance map, dont have value between 0 and 1. Because my calibration table said me: for example red band has max value = 0.88 nm, and my reflectance map in red band have max ...
0
votes
0answers
37 views

Correcting for correlation of kernel density of events to that of their distance from separate feature using ArcGIS Desktop?

I have a kernel density raster of recorded events. These events are correlated to their distance from a linear feature. In other words, density is higher near this line because it is a 'starting point'...
0
votes
0answers
2k views

convert lat/lon into meters

I have a database of latitude, longitude and radius in the following form: 48180759,11518950,19.0 Both latitude and longitude are expressed in degrees but then multiplied by 1e6 (or 1000000). ...