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Part 1: Document Description
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Citation |
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Title: |
HCID: Global Grid Cell Identification System at Multiple Spatial Resolutions |
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Identification Number: |
doi:10.7910/DVN/MZLXVQ |
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Distributor: |
Harvard Dataverse |
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Date of Distribution: |
2016-02-02 |
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Version: |
1 |
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Bibliographic Citation: |
HarvestChoice, International Food Policy Research Institute (IFPRI); University of California, Davis (UC Davis), 2017, "HCID: Global Grid Cell Identification System at Multiple Spatial Resolutions", https://doi.org/10.7910/DVN/MZLXVQ, Harvard Dataverse, V1 |
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Citation |
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Title: |
HCID: Global Grid Cell Identification System at Multiple Spatial Resolutions |
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Identification Number: |
doi:10.7910/DVN/MZLXVQ |
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Authoring Entity: |
HarvestChoice, International Food Policy Research Institute (IFPRI) |
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University of California, Davis (UC Davis) |
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Distributor: |
Harvard Dataverse |
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Access Authority: |
Hijmans, Robert |
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Access Authority: |
Koo, Jawoo |
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Depositor: |
Koo, Jawoo |
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Date of Deposit: |
2016-02-02 |
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Holdings Information: |
https://doi.org/10.7910/DVN/MZLXVQ |
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Study Scope |
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Keywords: |
Agricultural Sciences, Earth and Environmental Sciences, geographical information systems |
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Abstract: |
HCID is a global grid identification system offering users to refer the location and boundary of a grid cell, available at multiple spatial resolutions, using a single integer number. Instead of using the coordinates (latitude and longitude) of two corners of the grid cell bounding box (i.e., upper-left and lower-right), we assign each grid cell with a sequential integer number, or a grid cell ID, unique to each spatial resolution. This system was developed by HarvestChoice (http://harvestchoice.org) and is being widely used to facilitate analysis of spatial data layers, including the visualization, domain analysis, spatial aggregation/dis-aggregation, and general exchange of spatially-explicit data across disciplines - without needing to use a GIS software and spatial analysis skills. For the five arc-minute resolution of grids, we call the ID system as "CELL5M", whereas ones for 30 arc-second, 30-minute and 1 degree are called CELL30S, CELL30M and CELL1D, respectively. Assigning 0 starting at the upper-left corner (longitude: -180.0, latitude: 90.0) with a geographic projection, for example, CELL5M ranges up to 9,331,199 at the lower-right corner (longitude: 180.0, latitude: -90.0). The grid cell ID at a specific location can be easily computed mathematically, and this can be also easily converted to different resolutions. |
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Notes: |
This work was undertaken as part of the CGIAR Research Program on Policies, Institutions, and Markets (PIM) led by the International Food Policy Research Institute (IFPRI). Funding support was provided by Bill & Melinda Gates Foundation and PIM. |
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Methodology and Processing |
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Sources Statement |
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Data Access |
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Notes: |
<a href="http://creativecommons.org/publicdomain/zero/1.0">CC0 1.0</a> |
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Other Study Description Materials |
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Label: |
CELL10M.asc |
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Text: |
HCID at 10 arc-minute resolution. Esri ASC raster format with geographic projection. |
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Notes: |
text/x-fixed-field |
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Label: |
CELL1D.asc |
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Text: |
HCID at 1 degree resolution. Esri ASC raster format with geographic projection. |
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Notes: |
text/x-fixed-field |
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Label: |
CELL30M.asc |
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Text: |
HCID at 30 arc-minute resolution. Esri ASC raster format with geographic projection. |
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Notes: |
text/x-fixed-field |
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Label: |
CELL5M.asc |
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Text: |
HCID at 5 arc-minute resolution. Esri ASC raster format with geographic projection. |
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Notes: |
text/x-fixed-field |
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Label: |
HCB 2010 - HarvestChoice CellID (r2).pdf |
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Text: |
A HarvestChoice Brief providing technical background and code snippet to use HCID in computer programming. |
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Notes: |
application/pdf |