Questions tagged [operator]

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Daily averages in local time from UTC

It has been almost 2 weeks since I started getting familiar with netCDF files and operators (NCO) and climate data operators (cdo) and I am not an experienced programmer. I have a folder which ...
2
votes
1answer
189 views

Adding Not Operator in Definition Query of ArcGIS Pro?

I am using ArcGIS Pro 2.2 I want to apply a definition query saying NOT (name contains 'road%') apparently there is no option to add Not Operator in query neither there seem to be any option ...
2
votes
2answers
57 views

How to build a custom raster mosaic operator?

I'm trying to find a way to build a custom raster mosaic operator. When I Mosaic different raster to a new raster ArcMap lets u chose between "first", "last", "max" etc. I need a operator that chooses ...
49
votes
3answers
11k views

What is the purpose of PostGIS on PostgreSQL?

PostgreSQL already supports spatial data types, operators and indexing. What does PostGIS provide exactly that made it necessary to exist as an extension to PostgreSQL? Why don't we all just use ...
5
votes
2answers
190 views

How can I constrain this filtering even more?

I'm using QGIS and I am trying to filter a dataset using the advanced filter. My dataset contains earthquakes in the U.S., Canada and Mexico, however I would like to exclude Canada & Mexico for ...
0
votes
2answers
611 views

How to select data according to specific dates

I am using QGIS Essen version 2.14.1, and I am trying to select specific data according to dates in the field calculator: I am using the following formula but the system is telling me: syntax error, ...
2
votes
0answers
402 views

Between operator QGIS

I am using QGIS Essen version (2.14.1). I am trying to filter my data based on dates. I am wondering if the "between" operator exists like in SQL? I'm trying the following query but the results are ...
-1
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1answer
119 views

Where Clause looking at two Columns and a RANGE Expression

Using ArcPy I'm Trying to Set up a Where Clause with a RANGE in my "FeatureClassToFeatureClass_conversion" This {Where Clause} needs to Query Two Columns in the data: FEATURE = 'ENVIRONMENT' and ...
6
votes
1answer
2k views

How does gdal_calc numpy operators work?

Gdal_calc manual Gdal_calc is introduced as : gdal_calc.py - Command line raster calculator with numpy syntax gdal_calc.py [-A <filename>] [--A_band] [-B...-Z filename] [other_options] OPTIONS:...